PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Oil and gas extraction technologies such as fracking, or hydraulic fracturing, have dramatically increased U.S. oil production.
http://www.w3.org/ns/prov#wasQuotedFrom
  • comuv.com