PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Eutrophication is the most common problem, where inland waters and rivers are polluted with nitrogen and phosphorus run-off from fertilisers used in intensive agriculture and discharge of phosphate-rich sewage effluents.
http://www.w3.org/ns/prov#wasQuotedFrom
  • scienceray.com