PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • hierarchy, as defined below, give the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. ??Level 1 is defined as observable inputs such as quoted prices in active markets for identical assets.
http://www.w3.org/ns/prov#wasQuotedFrom
  • marketplace.org