PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • gnificant threat to marine environments in many ways, including the introduction of drilling fluid additives into the environment, which harm or kill fish and other marine life.- Drilling muds routinely discharge toxic metals such as lead, mercury and cadmium.
http://www.w3.org/ns/prov#wasQuotedFrom
  • surfrider.org