PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Galaxian also had great sound and used elements that have since become standard -- such as flags and other symbols to mark the player's progression through different levels of game play..
http://www.w3.org/ns/prov#wasQuotedFrom
  • arcade-history.com