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.Well, it has been studied.
http://www.w3.org/ns/prov#wasQuotedFrom
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