PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A significant cause of global warming is the emission of air pollutants known as greenhouse gases, including carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride.
http://www.w3.org/ns/prov#wasQuotedFrom
  • state.ny.us