<rdf:RDF xmlns:rdf ="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" > <rdf:Description rdf:ID="TonysSpecialty"> <rdf:type rdf:resource="#CRAB"/> </rdf:Description> <rdfs:Class rdf:ID="CRAB"> <rdfs:subClassOf rdf:resource="#SHELLFISH"/> </rdfs:Class> <rdfs:Class rdf:ID="SHELLFISH"> <rdfs:subClassOf rdf:resource="#SEAFOOD"/> </rdfs:Class> </rdf:RDF>