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: brisk, fair, sunny, cold, balanced

Answer: balanced


Question: Category: baby animals 
Words: lust, kitten, deer, bambi, fawn

Answer: lust


Question: Category: physical property 
Words: brittleness, capacitance, salt, obese, fat

Answer:
salt