PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The soft magnetic material may be Fe???, Co??? or Ni-based material such as Fe, Fe???Ni, Co???Nb???Zr, Co???Nb???Ta, Fe???Si, Ni???Fe???B.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com