PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The geologic composition of the fracking site, types of chemicals used, storage and handling of produced and flowback water, machinery employed and other factors can work individually or together to produce ill effects.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thisworks.com