PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Another way to fix exchange rates, which has been used by the United States and other nations in the past, is to tie currencies to the gold standard.
http://www.w3.org/ns/prov#wasQuotedFrom
  • factmonster.com