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: weather 
Words: cold, 70, fair, well, luke

Answer: well


Question: Category: direction 
Words: down, opposite of up, sliding, forward, emotional state

Answer: emotional state


Question: Category: aesthetic characteristic 
Words: variety, fair, medium, light, just

Answer:
just