<?xml version="1.0"?>
<ns:e1 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
        xmlns:ns="schema:Pos_07060201_derived_by_extension_009">
  <x>x</x>
  <!--Optional:-->
  <y>
    <x>x1</x>
    <!--Optional:-->
    <z>z1</z>
  </y>
</ns:e1>


