<prov:document
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:prov="http://www.w3.org/ns/prov#"
    xmlns:ex="http://example.com/ns/ex#">

  <prov:entity prov:id="ex:e1"/>

  <prov:activity prov:id="ex:a1"/>

  <prov:wasGeneratedBy>
    <prov:entity prov:ref="ex:e1"/>
    <prov:activity prov:ref="ex:a1"/>
    <prov:time>2001-10-26T21:32:52</prov:time>
    <ex:port>p1</ex:port>
  </prov:wasGeneratedBy>

</prov:document>
