PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Accordingly, there is a need for an optical isolator which can be rapidly switched from isolating a laser beam propagating in one direction to isolating a beam propagating in the other direction and which does not need bulky magnets in order to function properly.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com