PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Cement: A powder made of a variety of materials (usually certain types of clay and limestone) that when mixed with water hardens.
http://www.w3.org/ns/prov#wasQuotedFrom
  • teachengineering.org