PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The extent to which mankind contributes greenhouse gases such as carbon dioxide and methane into the atmosphere is another U.S. EPA responsibility.
http://www.w3.org/ns/prov#wasQuotedFrom
  • greatlakesecho.org