PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Because of fracking and a change away from burning coal to burning natural gas for electrical power generation, all major forms of air pollution, including carbon monoxide, nitrogen oxide and volatile organic compounds, have gone down???significantly (see ???Thank You for Fracking??? ??? Air Pollution Goes Down in PA).
http://www.w3.org/ns/prov#wasQuotedFrom
  • marcellusdrilling.com