PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Heavy metals, particulates, and other pollution are captured, processed, and/or filtered so that pollution from the stacks is reduced to below rigorous Singapore air quality regulations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • blogspot.com