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: sugar, calories, iron, fat, area

Answer: area


Question: Category: activity 
Words: spend, divide, apple, whittle, fritter

Answer: apple


Question: Category: food 
Words: grub, vittles, concise, meat, frank

Answer:
concise