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:
davit, hoist, crane, sandpiper, davit

Ex Output:
davit


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

Ex Output:
suits


Ex Input:
trap, fish, swim, kayak, horse

Ex Output:

horse