PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • When a light beam generated by a coherent light source passes through an optical system, it acquires a grain-like structure (so-called speckle structure) with 100% modulation of the light intensity, as well as nonuniformities associated with such phenomena as light interference.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com