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:
blackjack, gin, poker, wine, slapjack

Ex Output:
wine


Ex Input:
file, errands, type, folder, order office supplies

Ex Output:
folder


Ex Input:
glove, deck, dock, caution, level

Ex Output:

dock