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: aesthetic characteristic 
Words: comfortable, pretty, there, fine, classy
answer:
comfortable


question:
Category: nutritional value 
Words: vitamin c, salt, sugar, fat, big boned
answer:
big boned


question:
Category: moral characteristic 
Words: matter of fact, blunt, cheese, frank, loyalty
answer:

cheese