PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There are plenty of genuine threats to the ocean, including overfishing, chemical pollution, plastic litter, acidification, temperature rise, accoustic pollution from shipping ??? to name just a few.Marine energy generation devices however have so far been demonstrated to be an almost completely benign technology.
http://www.w3.org/ns/prov#wasQuotedFrom
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