PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Silicon-aluminium alloys tend to have relatively low strength and ductility, so other metals, especially magnesium and copper, are often added to improve strength.
http://www.w3.org/ns/prov#wasQuotedFrom
  • niir.org