<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:entity prov:id="ex:e2"/>

  <prov:wasDerivedFrom>
    <prov:generatedEntity prov:ref="ex:e2"/>
    <prov:usedEntity prov:ref="ex:e1"/>
  </prov:wasDerivedFrom>

  <prov:wasDerivedFrom>
    <prov:generatedEntity prov:ref="ex:e2"/>
    <prov:usedEntity prov:ref="ex:e1"/>
    <prov:type xsi:type="xsd:string">physical transform</prov:type>
  </prov:wasDerivedFrom>

</prov:document>
