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:
crew, board, deck, rudder, hull

Ex Output:
board


Ex Input:
misuse, danish, fritter, dally, whittle

Ex Output:
danish


Ex Input:
honorable, even, fair, light, level

Ex Output:

honorable