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:
persistent, cool, level, scorching, funny

Ex Output:
scorching


Ex Input:
deck, knockout, bow, sail, rudder

Ex Output:
knockout


Ex Input:
joker, punch, call, deck, blind

Ex Output:

punch