PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • When an alert bird deliberately gives a warning call to a stalking predator and the predator gives up the hunt, the sound is a signal.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org