PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • But once the water is in the aquarium, the biological processes initiate the nitrification cycle and ammonia results from fish respiration and decaying material including fish waste, bacteria convert ammonia to nitrite, and another bacteria converts nitrite to nitrate.
http://www.w3.org/ns/prov#wasQuotedFrom
  • tropicalfishkeeping.com