PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The most commonly analyzed externalities tend to be negative (e.g., if a factory or a farm pollutes a river which negatively impacts users of the water downstream, but does not pay to clean up the pollution, there is a negative externality).
http://www.w3.org/ns/prov#wasQuotedFrom
  • unep.org