PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • NO2 forms quickly when fossil fuels are burned for example petrol or diesel in a car or natural gas in a domestic boiler or power station.
http://www.w3.org/ns/prov#wasQuotedFrom
  • directionsmag.com