PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Among the more preferred ceramic materials are oxides of alumina, silica, titania and zirconia, carbides such as silicon carbide, titanium carbide and zirconium carbide, and nitrides such as aluminum nitride, boron nitride, silicon nitride and titanium nitride.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com