PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • No one can accurately say how much methane is leaking from wellheads, processing plants, pipelines and other natural gas facilities, but there is a growing body of evidence that the amount is significant.
http://www.w3.org/ns/prov#wasQuotedFrom
  • vix.ca