color(赤).
color(青).
color(黄).
 
color_yokohama(Tsurumi, Kohoku, Midori, Hodogaya, Nishi) :-
 
    color(Tsurumi), color(Kohoku), color(Midori), color(Hodogaya), color(Nishi),
 
 
    Tsurumi \= Kohoku,
    Kohoku \= Midori,
    Kohoku \= Hodogaya,
    Midori \= Hodogaya,
    Hodogaya \= Nishi.
 
:- initialization(
    (
 
        ( color_yokohama(_, _, _, _, _) ->
            format('3色での塗り分けが可能です。~n')
        ;
 
            format('3色での塗り分けは不可能です。~n')
        )
    )
).

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6ba06KaL5Yy6Cue3keWMugrmuK/ljJfljLoK

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