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:
valley, house, cabin, squashed, flat

Ex Output:
valley


Ex Input:
fat, obese, iron, sugar, sugars

Ex Output:
obese


Ex Input:
handsome, fine, arrest, jail time, hearing

Ex Output:

handsome