#genus_Cygnus__Cygnus  a genus of Anatidae
  supertype:  #bird_genus  a genus of birds
  member:  #mute_swan  #whooper_swan  #tundra_swan  #trumpeter_swan  #black_swan
  member of:  #family_Anatidae__Anatidae  swimming birds having heavy short-legged bodies and bills with a horny tip: swans; geese; ducks
     member of:  #order_Anseriformes__Anseriformes  ducks; geese; swans; screamers
        member of:  #class_Aves__Aves  birds
           member of:  #subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
              member of:  #phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                 member of:  #kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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