<?xml version="1.0"?>
<rdf:RDF xmlns:ex=""
         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">

  <!-- Illegal xmlns:ex above - no namespace name (URI) given -->

  <!-- No triples should be generated here -->

  <rdf:Description rdf:about="http://example.org/node">
    <ex:prop1 rdf:resource="http://example.org/node2" />
  </rdf:Description>

</rdf:RDF>
