PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Thus the concepts of the present invention and the maintenance of the formation gases when combined with injected gases, such as carbon dioxide, nitrogen, natural gas or steam, may further assist in recovery of hydrocarbons.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com