<?xml version = "1.0"?>
<library>
    <book id="  1  ">
        <author>
            <author-name>  author1  </author-name>
            <author-dob>  a date  </author-dob>
        </author>
        <genre>  genre1  </genre>
    </book>
    <book id="  2  ">
        <author>
            <author-name>  author2  </author-name>
            <author-dob>  a date2  </author-dob>
        </author>
        <genre>  genre2  </genre>
    </book>
    <book id="  3  ">
        <author>
            <author-name>  author3  </author-name>
            <author-dob>  a date3  </author-dob>
        </author>
        <genre>  genre3  </genre>
    </book>
</library>
