PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Nitrates are a part of any cycled tank and are not bad until they get in high numbers. 10, 20, and even 40 should not be enough to harm a fish.
http://www.w3.org/ns/prov#wasQuotedFrom
  • bettafish.com