PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A second alternative is to use noble metal catalysts, such as platinum, palladium, or rhodium in place of nickel.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com