PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some metals, such as iron, are passivated by the formation of a thin oxide coating by the acid and so are protected from both it and other acids.
http://www.w3.org/ns/prov#wasQuotedFrom
  • factbites.com