PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This ???flowback??? mixes with saline water from underground to create what the petroleum industry calls ???produced water???, a solution containing high salt content, radioactive materials, and heavy metals such as arsenic.
http://www.w3.org/ns/prov#wasQuotedFrom
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