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: large, obese, fat, chunky, fiber
answer:
fiber


question:
Category: elements 
Words: ground, replace, combustion, flame, fire
answer:
replace


question:
Category: emotional status 
Words: comfortable, acceptable, ok, fine, wispy
answer:

wispy