PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Diatomaceous earth is a soft, sedimentary rock that contains the remnants of fossilized single-celled diatoms that were surrounded by a cellular wall of silica.
http://www.w3.org/ns/prov#wasQuotedFrom
  • silica.org