PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Although wind is a variable power source (the wind must blow after all and sometimes it does not), utilities tend to see it as a less expensive part of the energy mix than solar, blending in with other sources.
http://www.w3.org/ns/prov#wasQuotedFrom
  • renewableenergyfocus.com