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: emotional status 
Words: high quality, fine, annoyed, relaxed, ok

Ex Output:
high quality


Ex Input:
Category: physical property 
Words: bulky, angular momentum, pasty, fat, big

Ex Output:
big


Ex Input:
Category: accomodation 
Words: flat, elevation, paved, townhome, apartment

Ex Output:

elevation