PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The inventive system may be used in auctions where the auctioneer is a seller, buyer or broker, the users are buyers, sellers or brokers, and for auction-like activities which cannot be interpreted as selling or buying.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com