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: animal 
Words: bus, leap, spider, run, fly

Answer: bus


Question: Category: direction 
Words: right, descending, down, opposite of up, emotional supports

Answer: emotional supports


Question: Category: aesthetic characteristic 
Words: dull, prime, hot, bright, fine

Answer:
prime