PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • While emissions of ozone precursors, chiefly nitrous oxide (NOx) compounds, may be decreasing in North America and Europe due to pollution-control measures, they are increasing in other regions of the world, especially Asia.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ipcc.ch