PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • With more than 60 percent of New York City???s street food vendors using gasoline- or diesel-powered generators, cocktails of toxic air pollutants are served up alongside the on-the-go meals, pollutants such as carbon dioxide, carbon monoxide, volatile organic compounds (VOCs) [pdf], nitrogen oxide and particulate matter.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nationalgeographic.com