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: fire, cool, water, ban, ice

Answer: ban


Question: unlicensed, chocolate, heavy, fudge, chocolate cake

Answer: unlicensed


Question: bus, fly, jog, beetle, drive

Answer:
beetle