<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:AnnotationProperty rdf:about="http://www.w3.org/2002/07/owl#backwardCompatibleWith"/>
</rdf:RDF>