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: luke, make the grade, fair, milky, deal

Answer: milky


Question: loveful, up, down, remorseful, melancholy

Answer: up


Question: heron, flamingo, derrick, swallow, crane

Answer:
derrick