PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The surface of the wafer 64 includes a surface region where the silicon, which is a material for the wafer 64, is exposed to the air and a surface region where the insulating film such as silicon oxide (SiO2) film or silicon nitride (Si3N4) film is exposed to the air.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com