PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Methane, hydrocarbons, H.sub.2, CO, and other fluids may be removed from the formation through the production well.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com