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: physical property 
Words: large, obese, fat, chunky, fiber

Answer: fiber


Question: Category: aesthetic characteristic 
Words: 70, variety, color, fair, light

Answer: 70


Question: Category: aesthetic characteristic 
Words: fair, well, medium, level, cold

Answer:
cold