PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Even leaving aside commodities such as gold and silver, I would also distinguish between commodities such as corn/copper and oil/coal because the former is replenishable/recyclable and the latter is depletes.
http://www.w3.org/ns/prov#wasQuotedFrom
  • interfluidity.com