PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Reporting was required for more than 350 pollutants, including toxic substances, such as mercury, lead, dioxins and furans; and air pollutants that contribute to smog and acid rain, such as sulphur dioxide, particulate matter and nitrogen oxides.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ec.gc.ca