<http://www.openlinksw.com/schemas/opengraph#link> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://www.w3.org/2006/vcard/ns#SOURCE> . <http://www.openlinksw.com/schemas/opengraph#link> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://purl.org/dc/elements/1.1/source> . <http://www.openlinksw.com/schemas/opengraph#link> <http://www.w3.org/2002/07/owl#equivalentProperty> <http://rdfs.org/sioc/ns#link> . <http://www.openlinksw.com/schemas/opengraph#link> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://purl.org/dc/terms/source> . <http://www.openlinksw.com/schemas/opengraph#link> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://dbpedia.org/ontology/Source> .