?<bookstore>
  <book genre="novel" style="hardcover">
    <title>The Handmaid's Tale</title>
    <price>19.95</price>
    <author>
      <first-name>Margaret</first-name>
      <last-name>Atwood</last-name>
    </author>
  </book>
  <book genre="novel" style="paperback">
    <title>The Poisonwood Bible</title>
    <price>11.99</price>
    <author>
      <first-name>Barbara</first-name>
      <last-name>Kingsolver</last-name>
    </author>
  </book>
  <book genre="novel" style="hardback">
    <title>Hannibal</title>
    <price>27.95</price>
    <author>
      <first-name>Richard</first-name>
      <last-name>Harris</last-name>
    </author>
  </book>
  <book genre="novel" style="hardback">
    <title>Focault's Pendulum</title>
    <price>22.95</price>
    <author>
      <first-name>Umberto</first-name>
      <last-name>Eco</last-name>
    </author>
  </book>
</bookstore>