PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Hydrogen is currently produced mostly from natural gas and similar sources, which means it will not solve anything, and the carbon dioxide should be non-fossil also for the carbon cycle to be closed.
http://www.w3.org/ns/prov#wasQuotedFrom
  • slashdot.org