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: moral characteristic 
Words: frank, concise, bun, matter of fact, fortitude

Answer: bun


Question: Category: computers 
Words: ram, file, motherboard, organize, folder

Answer: organize


Question: Category: emotional status 
Words: mad, comfortable, fine, detached, dull

Answer:
dull