PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • crystalline calcium silicate gel), lightweight expanded clays, unreacted cement particles, pumice, exfoliated rock and other geologic materials.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com