PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The industrially used solid inorganic compounds include oxides of typical elements, for example, alumina, silica, magnesia, and calcium oxide; oxides of transition metals such as titania, zirconia, and thoria; composites of these oxides; and metal halides such as magnesium chloride and aluminum chloride.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com