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: boats 
Words: deck, call, galley, bridge, stern

Ex Output:
call


Ex Input:
Category: corporate 
Words: synergy, combined, concerted, resistant, firm

Ex Output:
resistant


Ex Input:
Category: chocolate food 
Words: cream, cookies, smear, rich, fudge

Ex Output:

smear