PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As for the filter itself, sponge filters are a good choice as they are very easy to move and provide good biological filtration without too much water movement.
http://www.w3.org/ns/prov#wasQuotedFrom
  • tropicalfishkeeping.com