• http://ja.wcontology.org/resource/Category:北海道の二級河川 ( describe )
  • http://www.w3.org/2002/07/owl#sameAs ( describe )
    • http://ja.dbpedia.org/resource/Category:北海道の二級河川
  • http://wcontology.org/core#specifiedConstraint ( describe )
    • http://ja.wcontology.org/resource/Category:二級河川_(都道府県別)
  • http://www.w3.org/1992/02/22-rdf-syntax-ns#type ( describe )
    • http://wcontology.org/core#constrainedSetCategory
  • http://www.w3.org/ns/prov#wasDerivedFrom ( describe )
    • http://ja.wikipedia.org/wiki/Category:北海道の二級河川?oldid=63761347
  • http://wcontology.org/core#subClassOf ( describe )
    • http://ja.wcontology.org/resource/Category:北海道の河川