PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The EPA also took samples from additional private and public water wells [5] where they found ???methane, other petroleum hydrocarbons and other chemical compounds??? that appeared ???consistent with migration from areas of gas production.???
http://www.w3.org/ns/prov#wasQuotedFrom
  • desmogblog.com