PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A grinding aid is a material that has a significant effect on the chemical and physical processes of abrading, which results in improved performance.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com