PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As we described in previous posts, a range of health risks have been associated with hydraulic fracturing and other parts of the extraction process, such as the chemicals that are injected deep underground and the natural, but toxic, compounds that rise to the surface.
http://www.w3.org/ns/prov#wasQuotedFrom
  • neogap.org