rentiis</author>
    <year>2005</year>
    <price>30.0</price>
  </row>
  <row>
    <category>children</category>
    <title>Harry Potter</title>
    <author>J K. Rowling</author>
    <year>2005</year>
    <price>29.99</price>
  </row>
  <row>
    <category>web</category>
    <title>Learning XML</title>
    <author>Erik T. Ray</author>
    <year>2003</year>
    <price>39.95</price>
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</data>r3