PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • I googled and found an answer on the UCS website (yes, you have caught me spreading a little gospel from an anti-nuke site). http://www.ucsusa.org/clean_energy/fossil_fuels/offmen-how-natural-gas-works.html[Environmental Issues - Although natural gas is a fossil fuel and so is made up mostly of carbon, global warming emissions from gas are much less than coal or oil.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cleanairwatch.org