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: mode of transportation 
Words: swim, bike, soar, fly, jump

Answer: jump


Question: Category: personal characteristic 
Words: assured, refreshing, unruffled, cool, positive

Answer: refreshing


Question: Category: aesthetic characteristic 
Words: arrest, fine, hot, beautiful, pretty

Answer:
arrest