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: physical property 
Words: sugars, obese, big boned, fat, pasty

Answer: sugars


Question: Category: food 
Words: blunt, entree, frank, wienerwurst, bun

Answer: blunt


Question: Category: nutritional value 
Words: chunky, fat, big, heavy, calcium

Answer:
chunky