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:
probation, ticket, exquisite, suspension, fine

Ex Output:
exquisite


Ex Input:
impartial, pale, fair, dishonest, well

Ex Output:
pale


Ex Input:
hoist, tackle, ostrich, crane, pelican

Ex Output:

hoist