PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Geothermal contributed 0.29% of US energy in 2011 and is a constant source of energy, available 24/7, unaffected by calm winds, drought and other environmental factors.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cleantechnica.com