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

Answer: refreshing


Question: Category: baby animals 
Words: follow, colt, fawn, cub, calf

Answer: follow


Question: Category: animal 
Words: jump, fish, fly, flap, beetle

Answer:
flap