PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It is difficult to obtain certain powders containing readily oxidizable metals such as aluminum because of the tendency of those metals to form the respective oxides during processing.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com.au