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:
sugars, obese, big boned, fat, pasty

Ex Output:
sugars


Ex Input:
goose, cow, bend, lion, duck

Ex Output:
bend


Ex Input:
general, plain, private, sargent, lieutenant

Ex Output:

plain