Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
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Question: Category: animal 
Words: waggle, drive, fly, bee, dive

Answer: drive


Question: Category: emotional status 
Words: left, emotional state, sad, emotional upsets, down

Answer: left


Question: Category: animal 
Words: cockroach, leap, drive, swim, fly

Answer:
drive