PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The green structures on the pad are separators and condensate tanks which remove and store ethane, butane, propane and other gas ???liquids??? from the natural gas produced by the well.
http://www.w3.org/ns/prov#wasQuotedFrom
  • frackcheckwv.net