PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The smoke contains high amounts of particulate matter, dioxin, carbon monoxide, nitrogen dioxide, sulfur dioxide, hydrochloric acid, formaldehyde and other toxic pollutants.
http://www.w3.org/ns/prov#wasQuotedFrom
  • drweil.com