Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.
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Question: acceptable, mad, fine, comfortable, probation

Answer: probation


Question: cool, unruffled, funny, chill, ethical

Answer: chill


Question: group, dance hall, clan, club, dagwood

Answer:
dagwood