PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Examples of optical components used in such systems include optical or light sources such as light emitting diodes and lasers; waveguides; fiber optics; lenses and other optics; photo-detectors and other optical sensors; optically-sensitive semiconductors; optical modulators, and others.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com