PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A fuel cell is an electrochemical device that produces electric power from either hydrogen or alternative fuels such as methanol, propane, butane or natural gas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • kurzweilai.net