PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Basically, the working face encompasses an electrically conductive electrolyte resistant material, for example, a valve metal such as titanium, tantalum, or alloys thereof containing on its surface an electrically conductive electrocatalytic active coating which may consist of a noble metal, noble metal oxide, or other suitable materials.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com