PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A domestic oil boom has led to a parallel rise in the supply of NGLs, the gas that is often mixed in with oil and can be separated into ethane, propane and other products.
http://www.w3.org/ns/prov#wasQuotedFrom
  • epcengineer.com