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: widespread 
Words: regular, colonel, typical, ordinary, general

Answer: colonel


Question: Category: police punishment 
Words: suspension, arrest, classy, custody, fine

Answer: classy


Question: Category: social gathering 
Words: group, clan, hamburger, club, bar

Answer:
hamburger