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: late, up to the moment, current, course, belated

Answer: course


Question: dumpling, fritter, goodbye, pastry, skin

Answer: goodbye


Question: taut, united, sustainability, concerted, firm

Answer:
taut