PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It contains water, lubricants, solvents and other substances from the original fracking fluid or extracted from the shale formation.
http://www.w3.org/ns/prov#wasQuotedFrom
  • eurekalert.org