PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The so-called greenhouse effect of water vapor, CO2, CH4 and other trace gases enable the atmosphere to retain more heat that would otherwise be possible.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wattsupwiththat.com