PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Nitrogen Dioxide is a noxious gas that can be dark brown or reddish brown in color at elevated levels, and has a pungent, acrid odor.
http://www.w3.org/ns/prov#wasQuotedFrom
  • starrinks.com