PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Water vapor, carbon dioxide, methane, and other gases in the atmosphere trap heat from the sun, warming Earth (sort of like a blanket).
http://www.w3.org/ns/prov#wasQuotedFrom
  • greatglobalwarming.com