PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The etching may be performed using either hydrofluoric acid, 1.23% acidulated phosphate fluoride or other suitable etchant.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.ca