PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The U.S. has benefited from an oil and gas boom because new drilling technologies have made it feasible to drill in states such as North Dakota and Pennsylvania.
http://www.w3.org/ns/prov#wasQuotedFrom
  • propresobama.org