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: penalty, fine, money, arrest, alright

Answer: alright


Question: Category: type of sandwich 
Words: picnic, open-faced, club, grilled cheese, lettuce

Answer: picnic


Question: Category: outdoor sport activity 
Words: climbing, dog, fish, camp, hunt

Answer:
dog