PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Power plants are the largest remaining source of those pollutants; they are responsible for one-half of the mercury and more than 75 percent of acid gas emissions in the US. ???The
http://www.w3.org/ns/prov#wasQuotedFrom
  • triplepundit.com