PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In the early 1970s there was enough natural gas in many states, especially California and Texas, that could go through domestic pipelines to fuel industries.
http://www.w3.org/ns/prov#wasQuotedFrom
  • energybulletin.net