PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ating agent, and examples of such materials are sulfuric acid, oleum, and chlorosulfonic acid, and sulfur trioxide.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com