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:
dog, goose, dodge, duck, cat

Ex Output:
dodge


Ex Input:
tangle, fair, color, deal, mild

Ex Output:

color