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: elements 
Words: ice, fire, burn, let go, combustion

Answer: let go


Question: Category: geographical property 
Words: paved, even, hill, level, flat

Answer: even


Question: Category: date status 
Words: moon, up to the moment, prompt, timely, current

Answer:
moon