#
# Copyright (c) 2007 NEPOMUK Consortium
# Copyright (c) 2011 Sebastian Trueg <trueg@kde.org>
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@prefix dc:      <http://purl.org/dc/elements/1.1/> .
@prefix exif:    <http://www.kanzaki.com/ns/exif#> .
@prefix geo:     <http://www.w3.org/2003/01/geo/wgs84_pos#> .
@prefix protege:  <http://protege.stanford.edu/system#> .
@prefix nao:     <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#> .
@prefix nfo:     <http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#> .
@prefix nie:     <http://www.semanticdesktop.org/ontologies/2007/01/19/nie#> .
@prefix ncal:    <http://www.semanticdesktop.org/ontologies/2007/04/02/ncal#> .
@prefix nco:     <http://www.semanticdesktop.org/ontologies/2007/03/22/nco#> .
@prefix dcterms:  <http://purl.org/dc/terms/> .
@prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
@prefix pimo:    <http://www.semanticdesktop.org/ontologies/2007/11/01/pimo#> .
@prefix nmo:     <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#> .
@prefix nrl:     <http://www.semanticdesktop.org/ontologies/2007/08/15/nrl#> .
@prefix tmo:     <http://www.semanticdesktop.org/ontologies/2008/05/20/tmo#> .
@prefix xsd:     <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix nid3:    <http://www.semanticdesktop.org/ontologies/2007/05/10/nid3#> .
@prefix nexif:   <http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#> .

nfo: {nfo:horizontalResolution
          a       rdf:Property ;
          rdfs:comment "Horizontal resolution of an image (if printed). Expressed in DPI." ;
          rdfs:domain nfo:Image ;
          rdfs:label "horizontalResolution" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:sampleRate
          a       rdf:Property ;
          rdfs:comment "The amount of audio samples per second." ;
          rdfs:domain nfo:Audio ;
          rdfs:label "sampleRate" ;
          rdfs:range xsd:float ;
          rdfs:subPropertyOf nfo:rate ;
          nrl:maxCardinality 1 .

    nfo:HardDiskPartition
          a       rdfs:Class ;
          rdfs:comment "A partition on a hard disk" ;
          rdfs:label "HardDiskPartition" ;
          rdfs:subClassOf nie:DataObject .

    nfo:fileName
          a       rdf:Property ;
          rdfs:subPropertyOf nao:prefLabel ;
          rdfs:comment "Name of the file, together with the extension" ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "fileName" ;
          nrl:maxCardinality "1" ;
          rdfs:range xsd:string .

    nfo:MediaStream
          a       rdfs:Class ;
          rdfs:comment "A stream of multimedia content, usually contained within a media container such as a movie (containing both audio and video) or a DVD (possibly containing many streams of audio and video). Most common interpretations for such a DataObject include Audio and Video." ;
          rdfs:label "MediaStream" ;
          rdfs:subClassOf nie:DataObject .

    nfo:Presentation
          a       rdfs:Class ;
          rdfs:comment "A Presentation made by some presentation software (Corel Presentations, OpenOffice Impress, MS Powerpoint etc.)" ;
          rdfs:label "Presentation" ;
          rdfs:subClassOf nfo:Document .

    nfo:Audio
          a       rdfs:Class ;
          rdfs:comment "A file containing audio content" ;
          rdfs:label "Audio" ;
          rdfs:subClassOf nfo:Media .

    nfo:hashAlgorithm
          a       rdf:Property ;
          rdfs:comment "Name of the algorithm used to compute the hash value. Examples might include CRC32, MD5, SHA, TTH etc." ;
          rdfs:domain nfo:FileHash ;
          rdfs:label "hashAlgorithm" ;
          rdfs:range xsd:string ;
          nrl:maxCardinality 1 .

    nfo:commentCharacterCount
          a       rdf:Property ;
          rdfs:comment "The amount of character in comments i.e. characters ignored by the compiler/interpreter." ;
          rdfs:domain nfo:SourceCode ;
          rdfs:label "commentCharacterCount" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:PlainTextDocument
          a       rdfs:Class ;
          rdfs:comment "A file containing plain text (ASCII, Unicode or other encodings). Examples may include TXT, HTML, XML, program source code etc." ;
          rdfs:label "PlainTextDocument" ;
          rdfs:subClassOf nfo:TextDocument .

    nfo:foundry
          a       rdf:Property ;
          rdfs:comment "The foundry, the organization that created the font." ;
          rdfs:domain nfo:Font ;
          rdfs:label "foundry" ;
          rdfs:range nco:Contact ;
          rdfs:subPropertyOf nco:creator ;
          nrl:maxCardinality 1 .

    nfo:losslessCompressionType
          a       nfo:CompressionType ;
          rdfs:label "losslessCompressionType" .

    nfo:sideChannels
          a       rdf:Property ;
          rdfs:comment "Number of side channels" ;
          rdfs:label "sideChannels" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nfo:channels ;
          nrl:maxCardinality 1 .

    nfo:interlaceMode
          a       rdf:Property ;
          rdfs:comment "True if the image is interlaced, false if not." ;
          rdfs:domain nfo:Visual ;
          rdfs:label "interlaceMode" ;
          rdfs:range xsd:boolean ;
          nrl:maxCardinality 1 .

    nfo:width
          a       rdf:Property ;
          rdfs:comment "Visual content width in pixels." ;
          rdfs:domain nfo:Visual ;
          rdfs:label "width" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:frameCount
          a       rdf:Property ;
          rdfs:comment "The amount of frames in a video sequence." ;
          rdfs:domain nfo:Video ;
          rdfs:label "frameCount" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nfo:count ;
          nrl:maxCardinality 1 .

    nfo:MediaFileListEntry
          a       rdfs:Class ;
          rdfs:comment "A single node in the list of media files contained within an MediaList instance. This class is intended to provide a type all those links have. In valid NRL untyped resources cannot be linked. There are no properties defined for this class but the application may expect rdf:first and rdf:last links. The former points to the DataObject instance, interpreted as Media the latter points at another MediaFileListEntr. At the end of the list there is a link to rdf:nil." ;
          rdfs:label "MediaFileListEntry" ;
          rdfs:subClassOf rdfs:Resource .

    nfo:Filesystem
          a       rdfs:Class ;
          rdfs:comment "A filesystem. Examples of filesystems include hard disk partitions, removable media, but also images thereof stored in files such as ISO." ;
          rdfs:label "Filesystem" ;
          rdfs:subClassOf nfo:DataContainer .

    nfo:filesystemType
          a       rdf:Property ;
          rdfs:comment "Type of filesystem such as ext3 and ntfs." ;
          rdfs:domain nfo:Filesystem ;
          rdfs:range xsd:string ;
          rdfs:label "filesystemType" ;
          nrl:maxCardinality 1 .

    nfo:totalSpace
          a       rdf:Property ;
          rdfs:comment "Total storage space of the filesystem, which can be different from nie:contentSize because the latter includes filesystem format overhead." ;
          rdfs:domain nfo:Filesystem ;
          rdfs:range xsd:integer ;
          rdfs:label "totalSpace" ;
          nrl:maxCardinality 1 .

    nfo:freeSpace
          a       rdf:Property ;
          rdfs:comment "Unoccupied storage space of the filesystem." ;
          rdfs:domain nfo:Filesystem ;
          rdfs:range xsd:integer ;
          rdfs:label "freeSpace" ;
          nrl:maxCardinality 1 .

    nfo:occupiedSpace
          a       rdf:Property ;
          rdfs:comment "Occupied storage space of the filesystem." ;
          rdfs:domain nfo:Filesystem ;
          rdfs:range xsd:integer ;
          rdfs:label "occupiedSpace" ;
          nrl:maxCardinality 1 .

    nfo:uuid
          a       rdf:Property ;
          rdfs:subPropertyOf nie:identifier ;
          rdfs:comment "Universally unique identifier of the filesystem. In the future, this property may have its parent changed to a more generic class." ;
          rdfs:domain nfo:Filesystem ;
          rdfs:range xsd:string ;
          rdfs:label "uuid" .

    nfo:definesFunction
          a       rdf:Property ;
          rdfs:comment "A name of a function/method defined in the given source code file." ;
          rdfs:domain nfo:SourceCode ;
          rdfs:label "definesFunction" ;
          rdfs:range xsd:string .

    nfo:Archive
          a       rdfs:Class ;
          rdfs:comment "A compressed file. May contain other files or folder inside. " ;
          rdfs:label "Archive" ;
          rdfs:subClassOf nfo:DataContainer .

    nfo:permissions
          a       rdf:Property ;
          rdfs:comment "A string containing the permissions of a file. A feature common in many UNIX-like operating systems." ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "permissions" ;
          rdfs:range xsd:string ;
          nrl:maxCardinality 1 .

    nfo:lineCount
          a       rdf:Property ;
          rdfs:comment "The amount of lines in a text document" ;
          rdfs:domain nfo:TextDocument ;
          rdfs:label "lineCount" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:SoftwareItem
          a       rdfs:Class ;
          rdfs:comment "A DataObject representing a piece of software. Examples of interpretations of a SoftwareItem include an Application and an OperatingSystem." ;
          rdfs:label "SoftwareItem" ;
          rdfs:subClassOf nie:DataObject .

    nfo:SourceCode
          a       rdfs:Class ;
          rdfs:comment "Code in a compilable or interpreted programming language." ;
          rdfs:label "SourceCode" ;
          rdfs:subClassOf nfo:PlainTextDocument .

    nfo:wordCount
          a       rdf:Property ;
          rdfs:comment "The amount of words in a text document." ;
          rdfs:domain nfo:TextDocument ;
          rdfs:label "wordCount" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:bookmarks
          a       rdf:Property ;
          rdfs:comment "The address of the linked object. Usually a web URI." ;
          rdfs:domain nfo:Bookmark ;
          rdfs:label "link" ;
          rdfs:range nie:DataObject ;
          rdfs:subPropertyOf nie:links ;
          nrl:cardinality 1 .

    nfo:characterPosition
          a       rdf:Property ;
          rdfs:comment "Character position of the bookmark." ;
          rdfs:domain nfo:Bookmark ;
          rdfs:label "characterPosition" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:pageNumber
          a       rdf:Property ;
          rdfs:comment "Page linked by the bookmark." ;
          rdfs:domain nfo:Bookmark ;
          rdfs:label "pageNumber" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:streamPosition
          a       rdf:Property ;
          rdfs:comment "Stream position of the bookmark, suitable for e.g. audio books. Expressed in milliseconds" ;
          rdfs:domain nfo:Bookmark ;
          rdfs:label "streamPosition" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:RemotePortAddress
          a       rdfs:Class ;
          rdfs:comment "An address specifying a remote host and port. Such an address can be interpreted in many ways (examples of such interpretations include mailboxes, websites, remote calendars or filesystems), depending on an interpretation, various kinds of data may be extracted from such an address." ;
          rdfs:label "RemotePortAddress" ;
          rdfs:subClassOf nie:DataObject .

    nfo:Attachment
          a       rdfs:Class ;
          rdfs:comment "A file attached to another data object. Many data formats allow for attachments: emails, vcards, ical events, id3 and exif..." ;
          rdfs:label "Attachment" ;
          rdfs:subClassOf nfo:EmbeddedFileDataObject .

    nfo:DataContainer
          a       rdfs:Class ;
          rdfs:comment "A superclass for all entities, whose primary purpose is to serve as containers for other data object. They usually don't have any \"meaning\" by themselves. Examples include folders, archives and optical disc images." ;
          rdfs:label "DataContainer" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:TextDocument
          a       rdfs:Class ;
          rdfs:comment "A text document" ;
          rdfs:label "TextDocument" ;
          rdfs:subClassOf nfo:Document .

    nfo:characterCount
          a       rdf:Property ;
          rdfs:comment "The amount of characters in the document." ;
          rdfs:domain nfo:TextDocument ;
          rdfs:label "characterCount" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:fileLastAccessed
          a       rdf:Property ;
          rdfs:comment "Time when the file was last accessed." ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "fileLastAccessed" ;
          rdfs:range xsd:dateTime ;
          rdfs:subPropertyOf dc:date ;
          nrl:maxCardinality 1 .

    nfo:supercedes
          a       rdf:Property ;
          rdfs:comment "States that a piece of software supercedes another piece of software." ;
          rdfs:domain nfo:Software ;
          rdfs:label "supercedes" ;
          rdfs:range nfo:Software .

    nfo:programmingLanguage
          a       rdf:Property ;
          rdfs:comment "Indicates the name of the programming language this source code file is written in. Examples might include 'C', 'C++', 'Java' etc." ;
          rdfs:domain nfo:SourceCode ;
          rdfs:label "programmingLanguage" ;
          rdfs:range xsd:string .

    nfo:PaginatedTextDocument
          a       rdfs:Class ;
          rdfs:comment "A file containing a text document, that is unambiguously divided into pages. Examples might include PDF, DOC, PS, DVI etc." ;
          rdfs:label "PaginatedTextDocument" ;
          rdfs:subClassOf nfo:TextDocument .

    nfo:Application
          a       rdfs:Class ;
          rdfs:comment "An application" ;
          rdfs:label "Application" ;
          rdfs:subClassOf nfo:Software .

    nfo:sampleCount
          a       rdf:Property ;
          rdfs:comment "The amount of samples in an audio clip." ;
          rdfs:domain nfo:Audio ;
          rdfs:label "sampleCount" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nfo:count ;
          nrl:maxCardinality 1 .

    nfo:Image
          a       rdfs:Class ;
          rdfs:comment "A file containing an image." ;
          rdfs:label "Image" ;
          rdfs:subClassOf nfo:Visual .

    nfo:height
          a       rdf:Property ;
          rdfs:comment "Visual content height in pixels." ;
          rdfs:domain nfo:Visual ;
          rdfs:label "height" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:frontChannels
          a       rdf:Property ;
          rdfs:comment "Number of front channels." ;
          rdfs:label "frontChannels" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nfo:channels ;
          nrl:maxCardinality 1 .

    nfo:FilesystemImage
          a       rdfs:Class ;
          nao:deprecated true ;
          rdfs:comment "An image of a filesystem. Instances of this class may include CD images, DVD images or hard disk partition images created by various pieces of software (e.g. Norton Ghost). Deprecated in favor of nfo:Filesystem." ;
          rdfs:label "FilesystemImage" ;
          rdfs:subClassOf nfo:Filesystem .

    nfo:CompressionType
          a       rdfs:Class ;
          rdfs:comment "Type of compression. Instances of this class represent the limited set of values allowed for the nfo:compressionType property." ;
          rdfs:label "CompressionType" ;
          rdfs:subClassOf rdfs:Resource .

    nfo:ArchiveItem
          a       rdfs:Class ;
          rdfs:comment "A file entity inside an archive." ;
          rdfs:label "ArchiveItem" ;
          rdfs:subClassOf nfo:EmbeddedFileDataObject .

    nfo:rearChannels
          a       rdf:Property ;
          rdfs:comment "Number of rear channels." ;
          rdfs:label "rearChannels" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nfo:channels ;
          nrl:maxCardinality 1 .

    nfo:bitsPerSample
          a       rdf:Property ;
          rdfs:comment "Amount of bits in each audio sample." ;
          rdfs:domain nfo:Audio ;
          rdfs:label "bitsPerSample" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nfo:bitDepth ;
          nrl:maxCardinality 1 .

    nfo:HtmlDocument
          a       rdfs:Class ;
          rdfs:comment "A HTML document, may contain links to other files." ;
          rdfs:label "HtmlDocument" ;
          rdfs:subClassOf nfo:PlainTextDocument .

    nfo:Bookmark
          a       rdfs:Class ;
          rdfs:comment "A bookmark of a webbrowser. Use nie:title for the name/label, nie:contentCreated to represent the date when the user added the bookmark, and nie:contentLastModified for modifications. nfo:bookmarks to store the link." ;
          rdfs:label "Bookmark" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:FileHash
          a       rdfs:Class ;
          rdfs:comment "A fingerprint of the file, generated by some hashing function." ;
          rdfs:label "FileHash" ;
          rdfs:subClassOf rdfs:Resource .

    nfo:duration
          a       rdf:Property ;
          rdfs:comment "Duration of a media piece." ;
          rdfs:domain nfo:Media ;
          rdfs:label "duration" ;
          rdfs:range xsd:duration ;
          nrl:maxCardinality 1 .

    nfo:lfeChannels
          a       rdf:Property ;
          rdfs:comment "Number of Low Frequency Expansion (subwoofer) channels." ;
          rdfs:label "lfeChannels" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nfo:channels ;
          nrl:maxCardinality 1 .

    nfo:Video
          a       rdfs:Class ;
          rdfs:comment "A video file." ;
          rdfs:label "Video" ;
          rdfs:subClassOf nfo:Visual .

    nfo:hasMediaStream
          a       rdf:Property ;
          rdfs:comment "Connects a media container with a single media stream contained within." ;
          rdfs:domain nfo:Media ;
          rdfs:label "hasMediaStream" ;
          rdfs:range nie:DataObject ;
          rdfs:subPropertyOf nie:hasPart .

    nfo:Spreadsheet
          a       rdfs:Class ;
          rdfs:comment "A spreadsheet, created by a spreadsheet application. Examples might include Gnumeric, OpenOffice Calc or MS Excel." ;
          rdfs:label "Spreadsheet" ;
          rdfs:subClassOf nfo:Document .

    nfo:isPasswordProtected
          a       rdf:Property ;
          rdfs:comment "States if a given resource is password-protected." ;
          rdfs:domain nfo:ArchiveItem ;
          rdfs:label "isPasswordProtected" ;
          rdfs:range xsd:boolean ;
          nrl:maxCardinality 1 .

    nfo:hashValue
          a       rdf:Property ;
          rdfs:comment "The actual value of the hash." ;
          rdfs:domain nfo:FileHash ;
          rdfs:label "hashValue" ;
          rdfs:range xsd:string ;
          nrl:cardinality 1 .

    nfo:Document
          a       rdfs:Class ;
          rdfs:comment "A generic document. A common superclass for all documents on the desktop." ;
          rdfs:label "Document" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:FileDataObject
          a       rdfs:Class ;
          rdfs:comment "A resource containing a finite sequence of bytes with arbitrary information, that is available to a computer program and is usually based on some kind of durable storage. A file is durable in the sense that it remains available for programs to use after the current program has finished." ;
          rdfs:label "file" ;
          rdfs:subClassOf nie:DataObject .

    nfo:encryptedStatus
          a       nfo:EncryptionStatus ;
          rdfs:label "EncryptedStatus" .

    nfo:Visual
          a       rdfs:Class ;
          rdfs:comment "File containing visual content." ;
          rdfs:label "Visual" ;
          rdfs:subClassOf nfo:Media .

    nfo:uncompressedSize
          a       rdf:Property ;
          rdfs:comment "Uncompressed size of the content of a compressed file." ;
          rdfs:domain nfo:Archive ;
          rdfs:label "uncompressedSize" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:deletionDate
          a       rdf:Property ;
          rdfs:comment "The date and time of the deletion." ;
          rdfs:domain nfo:DeletedResource ;
          rdfs:label "deletionDate" ;
          rdfs:range xsd:dateTime ;
          nrl:maxCardinality 1 .

    nfo:MindMap
          a       rdfs:Class ;
          rdfs:comment "A MindMap, created by a mind-mapping utility. Examples might include FreeMind or mind mapper." ;
          rdfs:label "MindMap" ;
          rdfs:subClassOf nfo:Document .

    nfo:SoftwareService
          a       rdfs:Class ;
          rdfs:comment "A service published by a piece of software, either by an operating system or an application. Examples of such services may include calendar, addressbook and mailbox managed by a PIM application. This category is introduced to distinguish between data available directly from the applications (Via some Interprocess Communication Mechanisms) and data available from files on a disk. In either case both DataObjects would receive a similar interpretation (e.g. a Mailbox) and wouldn't differ on the content level." ;
          rdfs:label "SoftwareService" ;
          rdfs:subClassOf nie:DataObject .

    nfo:decryptedStatus
          a       nfo:EncryptionStatus ;
          rdfs:label "DecryptedStatus" .

    nfo:originalLocation
          a       rdf:Property ;
          rdfs:comment "The original location of the deleted resource." ;
          rdfs:domain nfo:DeletedResource ;
          rdfs:label "originalLocation" ;
          rdfs:range xsd:string ;
          nrl:maxCardinality 1 .

    nfo:Website
          a       rdfs:Class ;
          rdfs:comment "A website, usually a container for remote resources, that may be interpreted as HTMLDocuments, images or other types of content." ;
          rdfs:label "Website" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:VectorImage
          a       rdfs:Class ;
          rdfs:label "VectorImage" ;
          rdfs:subClassOf nfo:Image .

    nfo:Cursor
          a       rdfs:Class ;
          rdfs:comment "A Cursor." ;
          rdfs:label "Cursor" ;
          rdfs:subClassOf nfo:RasterImage .

    nfo:Media
          a       rdfs:Class ;
          rdfs:comment "A piece of media content. This class may be used to express complex media containers with many streams of various media content (both aural and visual)." ;
          rdfs:label "Media" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:hasMediaFileListEntry
          a       rdf:Property ;
          rdfs:comment "This property is intended to point to an RDF list of MediaFiles." ;
          rdfs:domain nfo:MediaList ;
          rdfs:label "hasMediaFileListEntry" ;
          rdfs:range nfo:MediaFileListEntry .

    nfo:BookmarkFolder
          a       rdfs:Class ;
          rdfs:comment "A folder with bookmarks of a webbrowser. Use nfo:containsBookmark to relate Bookmarks. Folders can contain subfolders, use containsBookmarkFolder to relate them." ;
          rdfs:label "Bookmark Folder" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:channels
          a       rdf:Property ;
          rdfs:comment "Number of channels. This property is to be used directly if no detailed information is necessary. Otherwise use more detailed subproperties." ;
          rdfs:domain nfo:Audio ;
          rdfs:label "channels" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:colorDepth
          a       rdf:Property ;
          rdfs:comment "Amount of bits used to express the color of each pixel." ;
          rdfs:domain nfo:Visual ;
          rdfs:label "colorDepth" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nfo:bitDepth ;
          nrl:maxCardinality 1 .

    nfo:Font
          a       rdfs:Class ;
          rdfs:comment "A font." ;
          rdfs:label "Font" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:averageBitrate
          a       rdf:Property ;
          rdfs:comment "The average overall bitrate of a media container. (i.e. the size of the piece of media in bits, divided by it's duration expressed in seconds)." ;
          rdfs:domain nfo:Media ;
          rdfs:label "averageBitrate" ;
          rdfs:range xsd:float ;
          rdfs:subPropertyOf nfo:rate ;
          nrl:maxCardinality 1 .

    nfo:Icon
          a       rdfs:Class ;
          rdfs:comment "An Icon (regardless of whether it's a raster or a vector icon. A resource representing an icon could have two types (Icon and Raster, or Icon and Vector) if required." ;
          rdfs:label "Icon" ;
          rdfs:subClassOf nfo:Image .

    nfo:fileOwner
          a       rdf:Property ;
          rdfs:comment "The owner of the file as defined by the file system access rights feature." ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "fileOwner" ;
          rdfs:range nco:Contact ;
          nrl:maxCardinality 1 .

    nfo:aspectRatio
          a       rdf:Property ;
          rdfs:comment "Visual content aspect ratio. (Width divided by Height)" ;
          rdfs:domain nfo:Visual ;
          rdfs:label "aspectRatio" ;
          rdfs:range xsd:float ;
          nrl:maxCardinality 1 .

    nfo:bitDepth
          a       rdf:Property ;
          rdfs:comment "A common superproperty for all properties signifying the amount of bits for an atomic unit of data. Examples of subproperties may include bitsPerSample and bitsPerPixel" ;
          rdfs:domain nfo:Media ;
          rdfs:label "bitDepth" ;
          rdfs:range rdfs:Literal ;
          nrl:maxCardinality 1 .

    nfo:containsBookmarkFolder
          a       rdf:Property ;
          rdfs:comment "The folder contains a bookmark folder." ;
          rdfs:domain nfo:BookmarkFolder ;
          rdfs:label "contains folder" ;
          rdfs:range nfo:BookmarkFolder ;
          rdfs:subPropertyOf nie:hasLogicalPart .

    nfo:belongsToContainer
          a       rdf:Property ;
          rdfs:comment "Models the containment relations between Files and Folders (or CompressedFiles)." ;
          rdfs:domain nie:DataObject ;
          rdfs:label "belongsToContainer" ;
          rdfs:range nfo:DataContainer ;
          rdfs:subPropertyOf nie:isPartOf .

    nfo:verticalResolution
          a       rdf:Property ;
          rdfs:comment "Vertical resolution of an Image (if printed). Expressed in DPI" ;
          rdfs:domain nfo:Image ;
          rdfs:label "verticalResolution" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:fileUrl
          a       rdf:Property ;
	  nao:deprecated true ;
          rdfs:comment "URL of the file. It points at the location of the file. In cases where creating a simple file:// or http:// URL for a file is difficult (e.g. for files inside compressed archives) the applications are encouraged to use conventions defined by Apache Commons VFS Project at http://jakarta.apache.org/  commons/ vfs/ filesystems.html." ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "fileUrl" ;
          rdfs:range rdfs:Resource ;
	  rdfs:subPropertyOf nie:url .

    nfo:count
          a       rdf:Property ;
          rdfs:comment "A common superproperty for all properties signifying the amount of atomic media data units. Examples of subproperties may include sampleCount and frameCount." ;
          rdfs:domain nfo:Media ;
          rdfs:label "count" ;
          rdfs:range xsd:integer .

    nfo:frameRate
          a       rdf:Property ;
          rdfs:comment "Amount of video frames per second." ;
          rdfs:domain nfo:Video ;
          rdfs:label "frameRate" ;
          rdfs:range xsd:float ;
          rdfs:subPropertyOf nfo:rate ;
          nrl:maxCardinality 1 .

    nfo:fontFamily
          a       rdf:Property ;
          rdfs:comment "The name of the font family." ;
          rdfs:domain nfo:Font ;
          rdfs:label "fontFamily" ;
          rdfs:range xsd:string ;
          nrl:maxCardinality 1 .

    nfo:EmbeddedFileDataObject
          a       rdfs:Class ;
          rdfs:comment "A file embedded in another data object. There are many ways in which a file may be embedded in another one. Use this class directly only in cases if none of the subclasses gives a better description of your case." ;
          rdfs:label "EmbeddedFileDataObject" ;
          rdfs:subClassOf nfo:FileDataObject .

    nfo:fileCreated
          a       rdf:Property ;
          rdfs:comment "File creation date" ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "fileCreated" ;
          rdfs:range xsd:dateTime ;
          rdfs:subPropertyOf nie:created ;
          nrl:maxCardinality 1 .

    nfo:bitrateType
          a       rdf:Property ;
          rdfs:comment "The type of the bitrate. Examples may include CBR and VBR." ;
          rdfs:domain nfo:Media ;
          rdfs:label "bitrateType" ;
          rdfs:range xsd:string ;
          nrl:maxCardinality 1 .

    nfo:encoding
          a       rdf:Property ;
          rdfs:comment "The encoding used for the Embedded File. Examples might include BASE64 or UUEncode" ;
          rdfs:domain nfo:EmbeddedFileDataObject ;
          rdfs:label "encoding" ;
          rdfs:range xsd:string ;
          nrl:maxCardinality 1 .

    nfo:Folder
          a       rdfs:Class ;
          rdfs:comment "A folder/directory. Examples of folders include folders on a filesystem and message folders in a mailbox." ;
          rdfs:label "Folder" ;
          rdfs:subClassOf nfo:DataContainer .

    nfo:hasHash
          a       rdf:Property ;
          rdfs:comment "Links the file with it's hash value." ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "hasHash" ;
          rdfs:range nfo:FileHash .

    nfo:codec
          a       rdf:Property ;
          rdfs:comment "The name of the codec necessary to decode a piece of media." ;
          rdfs:domain nfo:Media ;
          rdfs:label "codec" ;
          rdfs:range rdfs:Literal .

    nfo:fileLastModified
          a       rdf:Property ;
	  nao:deprecated true ;
          rdfs:comment "last modification date" ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "fileLastModified" ;
          rdfs:range xsd:dateTime ;
          rdfs:subPropertyOf nie:lastModified .

    nfo:compressionType
          a       rdf:Property ;
          rdfs:comment "The type of the compression. Values include, 'lossy' and 'lossless'." ;
          rdfs:domain nfo:Media ;
          rdfs:label "compressionType" ;
          rdfs:range nfo:CompressionType ;
          nrl:maxCardinality 1 .

    nfo:pageCount
          a       rdf:Property ;
          rdfs:comment "Number of pages." ;
          rdfs:domain nfo:PaginatedTextDocument ;
          rdfs:label "pageCount" ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:RasterImage
          a       rdfs:Class ;
          rdfs:comment "A raster image." ;
          rdfs:label "RasterImage" ;
          rdfs:subClassOf nfo:Image .

    nfo:definesGlobalVariable
          a       rdf:Property ;
          rdfs:comment "Name of a global variable defined within the source code file." ;
          rdfs:domain nfo:SourceCode ;
          rdfs:label "definesGlobalVariable" ;
          rdfs:range xsd:string .

    nfo:DeletedResource
          a       rdfs:Class ;
          rdfs:comment "A file entity that has been deleted from the original source. Usually such entities are stored within various kinds of 'Trash' or 'Recycle Bin' folders." ;
          rdfs:label "DeletedResource" ;
          rdfs:subClassOf nfo:FileDataObject .

    nfo:Trash
          a       rdfs:Class ;
          rdfs:comment "Represents a container for deleted files, a feature common in modern operating systems." ;
          rdfs:label "Trash" ;
          rdfs:subClassOf nfo:DataContainer .

    nfo:conflicts
          a       rdf:Property ;
          rdfs:comment "States that a piece of software is in conflict with another piece of software." ;
          rdfs:domain nfo:Software ;
          rdfs:label "conflicts" ;
          rdfs:range nfo:Software .

    nfo:encryptionStatus
          a       rdf:Property ;
          rdfs:comment "The status of the encryption of the InformationElement." ;
          rdfs:domain nie:InformationElement ;
          rdfs:label "encryptionStatus" ;
          rdfs:range nfo:EncryptionStatus ;
          nrl:maxCardinality 1 .

    nfo:containsBookmark
          a       rdf:Property ;
          rdfs:comment "The folder contains a bookmark." ;
          rdfs:domain nfo:BookmarkFolder ;
          rdfs:label "contains bookmark" ;
          rdfs:range nfo:Bookmark ;
          rdfs:subPropertyOf nie:hasLogicalPart .

    nfo:Executable
          a       rdfs:Class ;
          rdfs:comment "An executable file." ;
          rdfs:label "Executable" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:definesClass
          a       rdf:Property ;
          rdfs:comment "Name of a class defined in the source code file." ;
          rdfs:domain nfo:SourceCode ;
          rdfs:label "definesClass" ;
          rdfs:range xsd:string .

    nfo:Software
          a       rdfs:Class ;
          rdfs:comment "A piece of software. Examples may include applications and the operating system. This interpretation most commonly applies to SoftwareItems." ;
          rdfs:label "Software" ;
          rdfs:subClassOf nie:InformationElement ;
          rdfs:subClassOf nao:Agent .

    nfo:lossyCompressionType
          a       nfo:CompressionType ;
          rdfs:label "lossyCompressionType" .

    nfo:EncryptionStatus
          a       rdfs:Class ;
          rdfs:comment "The status of the encryption of an InformationElement. nfo:encryptedStatus means that the InformationElement has been encrypted and couldn't be decrypted by the extraction software, thus no content is available. nfo:decryptedStatus means that decryption was successfull and the content is available." ;
          rdfs:label "EncryptionStatus" .

    nfo:OperatingSystem
          a       rdfs:Class ;
          rdfs:comment "An OperatingSystem" ;
          rdfs:label "OperatingSystem" ;
          rdfs:subClassOf nfo:Software .

    nfo:rate
          a       rdf:Property ;
          rdfs:comment "A common superproperty for all properties specifying the media rate. Examples of subproperties may include frameRate for video and sampleRate for audio. This property is expressed in units per second." ;
          rdfs:domain nfo:Media ;
          rdfs:label "rate" ;
          rdfs:range xsd:float .

    nfo:MediaList
          a       rdfs:Class ;
          rdfs:comment "A file containing a list of media files.e.g. a playlist" ;
          rdfs:label "MediaList" ;
          rdfs:subClassOf nie:InformationElement .

    nfo:fileSize
          a       rdf:Property ;
          rdfs:comment "The size of the file in bytes. For compressed files it means the size of the packed file, not of the contents. For folders it means the aggregated size of all contained files and folders " ;
          rdfs:domain nfo:FileDataObject ;
          rdfs:label "fileSize" ;
          rdfs:range xsd:integer ;
          rdfs:subPropertyOf nie:byteSize ;
          nrl:maxCardinality 1 .

    nfo:RemoteDataObject
          a       rdfs:Class ;
          rdfs:comment "A file data object stored at a remote location. Don't confuse this class with a RemotePortAddress. This one applies to a particular resource, RemotePortAddress applies to an address, that can have various interpretations." ;
          rdfs:label "RemoteDataObject" ;
          rdfs:subClassOf nfo:FileDataObject .

    nfo:colorCount
          a rdf:Property ;
          rdfs:label "color count" ;
          rdfs:comment "The number of colors used/available in a raster image." ;
          rdfs:domain nfo:RasterImage ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:paletteSize
          a rdf:Property ;
          rdfs:label "palette size" ;
          rdfs:comment "The number of colors defined in palette of the raster image." ;
          rdfs:domain nfo:RasterImage ;
          rdfs:range xsd:integer ;
          nrl:maxCardinality 1 .

    nfo:WebDataObject a rdfs:Class ;
          rdfs:subClassOf nie:DataObject ;
          rdfs:label "web data object" ;
          rdfs:comment "An information resources of which representations (files, streams) can be retrieved through a web server. They may be generated at retrieval time. Typical examples are pages served by PHP or AJAX or mp3 streams." .
}

<http://www.semanticdesktop.org/ontologies/2007/03/22/nfo_metadata#> {nfo:  a       nrl:Ontology ;
          nao:creator <http://www.dfki.uni-kl.de/~mylka> ;
          nao:hasDefaultNamespace
                  "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#" ;
          nao:hasDefaultNamespaceAbbreviation
                  "nfo" ;
          nao:lastModified "2011-08-22T12:26:40.500Z" ;
          nao:status "Unstable" ;
          nao:updatable "0 " ;
          nao:version "0.8.1" ;
          nao:prefLabel "Nepomuk File Ontology" ;
          nao:description "The Nepomuk File Ontology provides vocabulary to express information extracted from various sources. They include files, pieces of software and remote hosts." .

    <http://www.semanticdesktop.org/ontologies/2007/03/22/nfo_metadata#>
          a       nrl:GraphMetadata ;
          nrl:coreGraphMetadataFor
                  nfo: .
}

