PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • At present it appears that neither the spiraling of oil prices nor the prospect that peak oil production is imminent has led to serious scientific efforts to develop such renewable energy sources as solar and wind power.
http://www.w3.org/ns/prov#wasQuotedFrom
  • japanfocus.org