PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, problems such as excessive cost, equipment size, and process complexity have prevented hydrogen-based fuel cell technology from replacing most conventional power sources.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es