madsrdf	http://www.loc.gov/mads/rdf/v1#
bflc	http://id.loc.gov/ontologies/bflc/
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/