PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The waste released into the air included materials such as nitrogen oxides, carbon monoxide, sulfur dioxide, benzene, arsenic and zinc.
http://www.w3.org/ns/prov#wasQuotedFrom
  • forcechange.com