PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Contrary to what you seem to be suggesting, classical economists such as Adam Smith worried about economic slumps due to demand not matching supply.
http://www.w3.org/ns/prov#wasQuotedFrom
  • econbrowser.com