foaf	http://xmlns.com/foaf/0.1/
dc	http://purl.org/dc/terms/
owl	http://www.w3.org/2002/07/owl#
rdf	http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs	http://www.w3.org/2000/01/rdf-schema#
dbp	http://dbpedia.org/property/
skos	http://www.w3.org/2004/02/skos/core#
xsd	http://www.w3.org/2001/XMLSchema#
geo	http://www.w3.org/2003/01/geo/wgs84_pos#
sioc	http://rdfs.org/sioc/ns#