rdf	http://www.w3.org/1999/02/22-rdf-syntax-ns#
foaf	http://xmlns.com/foaf/0.1/
yago	http://yago-knowledge.org/resource/
rdfs	http://www.w3.org/2000/01/rdf-schema#
dbo	http://dbpedia.org/ontology/
dbp	http://dbpedia.org/property/
gr	http://purl.org/goodrelations/v1#
dc	http://purl.org/dc/elements/1.1/