<!ELEMENT ns1:a (#PCDATA | b | d)*>
<!ATTLIST ns1:a xmlns:ns1 CDATA #IMPLIED>
<!ELEMENT b (#PCDATA | ns2:c)*>
<!ATTLIST b c CDATA #IMPLIED>
<!ELEMENT ns2:c (#PCDATA)>
<!ATTLIST ns2:c xmlns:ns2 CDATA #IMPLIED>
<!ELEMENT d EMPTY>
<!ATTLIST d e ENTITY #REQUIRED>
<!ENTITY very "V-E-R-Y">
<!ENTITY ee SYSTEM "external-parsed-entity.ent">
<!NOTATION txt SYSTEM "text/plain">
<!ENTITY ue SYSTEM "external-unparsed-entity.ent" NDATA txt>
