PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Early studies in findings conducted in the area indicated that some local residential wells contained elevated levels of metals, including lead, manganese, copper, and nickel.
http://www.w3.org/ns/prov#wasQuotedFrom
  • epa.gov