PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • You need lots of hydrogen anyways, becuse we need to synthesize chemicals such as ammonia (NH3) which currently gets the hydrogen it needs from splitting natural gas.Otherwise we have no fertilizers, and no food.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org