PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The initial sampling in 2008 revealed traces of methane, hydrocarbons, and other contaminants associated with fracking fluids in some of the wells.
http://www.w3.org/ns/prov#wasQuotedFrom
  • foreffectivegov.org