add_book_data2.xml~

<address_book>
  <person>
    <first_name>Chris</first_name>
    <last_name>Barker</last_name>
    <office_phone>123-456-7890</office_phone>
    <home_phone>206-555-1234</home_phone>
    <address />
    <cell_phone>234-567-8901</cell_phone>
    <email>PythonCHB@gmail.com</email>
  </person>
  <person>
    <first_name>Fred</first_name>
    <last_name>Jones</last_name>
    <office_phone>564-466-7990</office_phone>
    <home_phone>510-555-1234</home_phone>
    <address />
    <cell_phone>403-561-8911</cell_phone>
    <email>FredJones@some_company.com</email>
  </person>
  <person>
    <first_name>Nancy</first_name>
    <last_name>Wilson</last_name>
    <office_phone>123-765-9877</office_phone>
    <home_phone>423-321-9876</home_phone>
    <address />
    <cell_phone>432-567-8466</cell_phone>
    <email>Wilson.Nancy@gmail.com</email>
  </person>
</address_book>