PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Although fracking companies aren???t required to disclose the ingredients in their fracking fluids, a 2011 Congressional investigation found carcinogens, including benzene and other toxic diesel-based chemicals, in fracking fluid.
http://www.w3.org/ns/prov#wasQuotedFrom
  • celsias.com