PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Methane is a convenient fuel for an internal combustion engine, with a very high octane rating of 120 and a reputation as a very clean-burning fuel.
http://www.w3.org/ns/prov#wasQuotedFrom
  • airships.net