PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The increasing use of hydraulic fracturing has raised a number of concerns about the potential impacts on water quality and availability, particularly with respect to the chemical composition of fracturing fluids and the methods used.
http://www.w3.org/ns/prov#wasQuotedFrom
  • conservativeunderground.com