PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • rill.Modern fracking, which was pioneered in the Barnett Shale right here in Texas, is a process in which water, sand and additives are shot at pressure into a well to create fractures in rock formations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • news-journal.com