<rdf:RDF

xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"

xmlns:owl="http://www.w3.org/2002/07/owl#"

xmlns:xsd="http://www.w3.org/2001/XMLSchema#"

xmlns:ex="http://www.example.org#"

xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">

<owl:SymmetricProperty rdf:about="http://www.example.org#p">

<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#AsymmetricProperty"/>

</owl:SymmetricProperty>

<rdf:Description rdf:about="http://www.example.org#x">

<ex:p rdf:resource="http://www.example.org#y"/>

</rdf:Description>

</rdf:RDF>