PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Ammonium and especially ammonia are serious pollutants in creeks and rivers and, above all, toxic to most aquatic animals, especially fish.
http://www.w3.org/ns/prov#wasQuotedFrom
  • musketeer.ch