PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Alternatively, any suitable metal such as gold (Au), aluminum (Al), Titanium (Ti), Tungsten (W), nickel (Ni), palladium (Pd) or platinum (Pt) may be substituted for copper.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com