PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Underlying most of Oklahoma, the Woodford shale is an interesting mix of natural gas, natural gas liquids and shale oil.
http://www.w3.org/ns/prov#wasQuotedFrom
  • investorplace.com