Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Ex Input:
deck, crew, fight, knockout, tko

Ex Output:
crew


Ex Input:
deck, punch, blocking, suits, canvas

Ex Output:
suits


Ex Input:
townhome, paved, flat, studio, paved

Ex Output:

paved