PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • When they drill, toxic fluid from hydraulic fracturing, or fracking, and other types of drilling is injected deep underground.
http://www.w3.org/ns/prov#wasQuotedFrom
  • tspr.org