PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Pollution, disease, fertilizer runoff in streams, and other unknown causes are contributing to the deaths of frogs and toads in the U.S. and around the world.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ibabuzz.com