PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There is no need for power stations or an electric grid, all they require is a gas source including hydrogen produced from solar.
http://www.w3.org/ns/prov#wasQuotedFrom
  • smh.com.au