PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This substrate is effective for removal of nitrate, nitrite, ammonia, and other wastes present in the aquarium water.
http://www.w3.org/ns/prov#wasQuotedFrom
  • fish.com