PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The Sierra Club declared the second week in August Clean Air Week, as activists and spokespeople intensified calls for clean air protections from the EPA. In particular, Beyond Coal supporters demand that the EPA introduce its long-awaited air quality standards to reduce smog, one of the most dangerous forms of air pollution.
http://www.w3.org/ns/prov#wasQuotedFrom
  • typepad.com