PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Such Greenhouse gases, including such as carbon dioxide and methane, (CO2), methane (CH4), nitrous oxide (N2O), perfluorocarbons (PFCs), hydrofluorocarbons (HFCs), and sulfur hexafluoride (SF6), affect the energy balance of the global atmosphere in ways expected to lead to an overall increase in global average temperature, known as global warming (see also greenhouse effect).
http://www.w3.org/ns/prov#wasQuotedFrom
  • britannica.com