PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Although other angles may be used, the coupling surface 76 p in the example forms an angle of approximately 120??? with respect to the reflector surface 70 a, therefore the angle between the central axis of emission of the respective light emitter 75 and the reflector surface 70 a in this example is an acute angle or approximately 30???.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com