PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The Ref. # field is a system generated number assigned to a specific trade, with the first six digits preferably being the trade date.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com