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:
cool, fair, light, fine, level

Ex Output:
fine


Ex Input:
hearts, knockout, deck, punch, tko

Ex Output:

hearts