PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • So far, all attempts to produce an electrode suitable as anode for aluminium production and based on metals such as nickel, aluminium, iron and copper or other metals have proven to be unsuccessful in particular due to the problem of poor adherence due partly to thermal mismatch between the metals and the oxide formed prior to or during electrolysis.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com