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: remorseful, flat, melancholy, down, shameful

Answer: flat


Question: bus, fly, swim, spider, flap

Answer: spider


Question: doorstep, community, open-faced, club, hoagie

Answer:
community