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: cool, unruffled, funny, chill, ethical

Answer: chill


Question: war, brandy, bridge, gin, blackjack

Answer: brandy


Question: private, sargent, general, popular, major

Answer:
popular