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:
prison, fine, there, handsome, high quality

Ex Output:
prison


Ex Input:
galley, head, suits, deck, dock

Ex Output:
suits


Ex Input:
positive, scorching, cool, freezing, hot

Ex Output:

positive