PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Moreover, on average, Americans breathe in air pollutants such as sulfur and nitrous oxides at double the levels of western Europeans.
http://www.w3.org/ns/prov#wasQuotedFrom
  • yesmagazine.org