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: body part 
Words: foot, knee, eye, leg, ounce

Answer: ounce


Question: Category: police punishment 
Words: classy, probation, custody, fine, flyaway

Answer: classy


Question: Category: shady activities 
Words: fudge, loosen, brownie, lie, smuggled

Answer:
brownie