PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Bid-offer spread: The difference between the market's buy and sell price for a given security, fund unit, currency or other financial instrument.
http://www.w3.org/ns/prov#wasQuotedFrom
  • globalcustody.net