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:
luke, fair, mild, tangle, texture

Ex Output:
texture


Ex Input:
group, clan, hamburger, club, bar

Ex Output:
hamburger


Ex Input:
frank, wienerwurst, wiener, stern, meat

Ex Output:

stern