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- % One possibility only
- 1{murderer(ms_scarlet),murder(colonel_mustard)}1.
- 1{weapon(revolver),weapon(candle)}1.
- 1{place(kitchen),place(hall), place(dining-room)}1.
- % Card deduction
- :- place(kitchen).
- place(hall) :- murderer(colonel_mustard), not weapon(revolver).
- weapon(candle).
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