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.

Ex Input:
Category: moral characteristic 
Words: concise, brash, integrity, cheese, frank

Ex Output:
cheese


Ex Input:
Category: elements 
Words: pay, cool, combustion, air, fire

Ex Output:
pay


Ex Input:
Category: shady activities 
Words: unwarranted, fudge, pudding, lie, unlicensed

Ex Output:

pudding