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: emotional status 
Words: concerned, board, nervous, emotional, fret

Answer: board


Question: Category: aesthetic characteristic 
Words: loyal, medium, ghostly, tone, fair

Answer: loyal


Question: Category: emotional status 
Words: detached, hearing, content, calm, fine

Answer:
hearing