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: regular, general, captain, ubiquitous, popular

Answer: captain


Question: emotional upsets, emotional supports, down, ashamed, up

Answer: up


Question: chunky, obese, fiber, fat, bulky

Answer:
fiber