<?xml version="1.0"?>
<employees>
  <employee id="1">
    <name>John Smith</name>
    <manager xmlns:ns1="http://www.w3.org/2001/XMLSchema-instance" ns1:nil="true"/>
    <department>Widget Manufacturing</department>
  </employee>
  <employee xmlns:sql="http://boojum.org.uk/NS/XMLServer" id="2">
    <name>Fred Bloggs</name>
    <manager>Ann Other</manager>
    <department>Widget Manufacturing</department>
  </employee>
  <employee xmlns:sql="http://boojum.org.uk/NS/XMLServer" id="3">
    <name>Ann Other</name>
    <manager>John Smith</manager>
    <department>Widget Manufacturing</department>
  </employee>
  <employee xmlns:sql="http://boojum.org.uk/NS/XMLServer" id="4">
    <name>Minnie Mouse</name>
    <manager xmlns:ns2="http://www.w3.org/2001/XMLSchema-instance" ns2:nil="true"/>
    <department>Widget Marketing</department>
  </employee>
  <employee xmlns:sql="http://boojum.org.uk/NS/XMLServer" id="5">
    <name>Mickey Mouse</name>
    <manager>Minnie Mouse</manager>
    <department>Widget Marketing</department>
  </employee>
</employees>