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: flyaway, jail time, ok, arrest, fine

Answer: ok


Question: Category: aesthetic characteristic 
Words: there, ticket, fine, dull, level

Answer: ticket


Question: Category: body part 
Words: foot, knee, inch, arm, ankle

Answer:
inch