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:
dally, misuse, fritter, whittle, patty

Ex Output:
patty


Ex Input:
knockout, blocking, crew, tko, deck

Ex Output:
crew


Ex Input:
hot dog, matter of fact, honesty, bold, frank

Ex Output:

hot dog