<schema targetNamespace="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
   xmlns="http://www.w3.org/2001/XMLSchema" 
   xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">

   <attribute name="about" type="xsd:anyURI"/>

   <attribute name="resource" type="xsd:anyURI"/>

</schema>

