PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Electric or hydrogen seem the best to me, but there are others.There is a VERY good chance we are far past the point of no return.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org