PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Carbon dioxide and other heat-trapping gases have been shown experimentally and empirically, since at least the time of John Tyndall, to delay the radiation of heat from the Earth to space.
http://www.w3.org/ns/prov#wasQuotedFrom
  • scienceblogs.com