instruction:
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.
question:
Category: physical property 
Words: brittleness, protein, bulky, skinny, fat
answer:
protein


question:
Category: nutritional value 
Words: iron, heavy, vitamin c, fat, brittleness
answer:
brittleness


question:
Category: emotional status 
Words: opposite of up, emotional supports, down, kind, disgusted
answer:

opposite of up


