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: nutritional value 
Words: fat, protein, vitamin c, fiber, area

Answer: area


Question: Category: consumer product 
Words: content, books, thing, program, jealous

Answer: jealous


Question: Category: emotional status 
Words: down, emotional, emotional upsets, falling, ashamed

Answer:
falling