PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The light source 12 may be, e.g. an LED, a tunable laser, or a laser diode.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com