PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The reason for this is that although air pollution-causing SOx and particulates from factories had been alleviated to an extent, there is increasingly heavy air pollution from the NOx, particulates, and other pollutants in the exhaust gases of motor vehicles, and especially diesels, which increased exponentially.
http://www.w3.org/ns/prov#wasQuotedFrom
  • aozora.or.jp