PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Often Natural Gas from the well heads or midstream NG operations have to high BTU values to operate natural gas engines that drive compressors, boilers and other power generation equipment.
http://www.w3.org/ns/prov#wasQuotedFrom
  • american-environmental.us