PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Oil sands mining and refining have also dramatically increased the levels of air pollutants such as sulphur dioxides, nitrogen oxides, particulate matter and volatile organic compounds.
http://www.w3.org/ns/prov#wasQuotedFrom
  • resilience.org