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: bus, fly, swim, spider, flap

Answer: spider


Question: gated, right there, not open, barred, close

Answer: right there


Question: sad, emotional state, descending, emotional supports, down

Answer:
descending