<http://www.openlinksw.com/schemas/opengraph#birthday> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://purl.org/dc/terms/date> . <http://www.openlinksw.com/schemas/opengraph#birthday> <http://www.w3.org/2002/07/owl#equivalentProperty> <http://dbpedia.org/ontology/BirthDate> . <http://www.openlinksw.com/schemas/opengraph#birthday> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://purl.org/dc/elements/1.1/date> . <http://www.openlinksw.com/schemas/opengraph#birthday> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://dbpedia.org/ontology/Date> . <http://www.openlinksw.com/schemas/opengraph#birthday> <http://www.w3.org/2002/07/owl#equivalentProperty> <http://xmlns.com/foaf/0.1/birthday> . <http://www.openlinksw.com/schemas/opengraph#birthday> <http://www.w3.org/2002/07/owl#equivalentProperty> <http://www.w3.org/2006/vcard/ns#BDAY> .