Subject	Predicate	Object	Graph
prov:PrimarySource http://www.w3.org/ns/prov#PrimarySource	rdfs:comment http://www.w3.org/2000/01/rdf-schema#comment	An instance of prov:PrimarySou ...... ty :newsArticle; :foo :bar ] . @en	http://www.w3.org/ns/prov# http://www.w3.org/ns/prov#