<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:ex="http://www.example.org/ns#">

  <!-- check a property element without a namespace fails -->

  <rdf:Description rdf:about="http://example.org/node0">
     <prop>content</prop>
  </rdf:Description>

</rdf:RDF>
