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: accomodation 
Words: apartment, lined, house, condominium, flat

Ex Output:
lined


Ex Input:
Category: aesthetic characteristic 
Words: well, milky, variety, tone, fair

Ex Output:
well


Ex Input:
Category: personal characteristic 
Words: calm, assured, cool, icy, popular

Ex Output:

icy