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: animal 
Words: bird, fish, fly, drive, eagle

Ex Output:
drive


Ex Input:
Category: boxing terminology 
Words: jab, ring, check, level, deck

Ex Output:

check