PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Below is a picture of what seems to be the only propeller powered trolleyboat line that was ever operated in a commercial way.
http://www.w3.org/ns/prov#wasQuotedFrom
  • energybulletin.net