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

Answer: classy


Question: Category: fried food 
Words: apple, whittle, dumpling, fritter, pie

Answer: whittle


Question: Category: widespread 
Words: regular, universal, general, ubiquitous, private

Answer:
private