PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Occasionally the example of Nazi Germany is mentioned: During World War II, the Nazis ran out of petroleum but were able to make synthetic substitutes out of coal, a lower-grade fuel source.
http://www.w3.org/ns/prov#wasQuotedFrom
  • energybulletin.net