PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Human activities produce greenhouse gases such as carbon dioxide or chlorofluorocarbons (CFCs), and their effect is to make the world a little warmer still.
http://www.w3.org/ns/prov#wasQuotedFrom
  • newscientist.com