PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • But also it has been well known for over a century now that carbon dioxide in the air is a greenhouse gas, heating the air and surface.
http://www.w3.org/ns/prov#wasQuotedFrom
  • realclimate.org