PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • These discharges, with a low pH value and rich in heavy metals, affect downstream ecosystems and make water unsuitable for irrigation and other purposes.
http://www.w3.org/ns/prov#wasQuotedFrom
  • grida.no