PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The Chesapeake dead zones threaten a multi-year effort to restore the Bay???s water quality and enhance its production of crabs, oysters and other important fisheries.
http://www.w3.org/ns/prov#wasQuotedFrom
  • organic-center.org