PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Older diesel engines emit a mixture of particles, metals and gasses including over 40 hazardous air pollutants" as classified by the U.S. Environmental Protection Agency (EPA) under the Clean Air Act.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cleanwater.org