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: poker 
Words: fold, deck, board, call, knockout

Ex Output:
knockout


Ex Input:
Category: accomodation 
Words: elevation, level, round, flat, townhome

Ex Output:
elevation


Ex Input:
Category: computers 
Words: download, software, ram, errands, file

Ex Output:

errands