PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Circuit 46 is comprised of three layers; a first layer 50 comprises a suitable conductive material such as copper or aluminum which is deposited on substrate 44, a second layer 52 comprises nickel or equivalent which is deposited on layer 50 and a third layer 54 comprises a noble metal (e.g., gold) which is deposited on layer 52.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com