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:
fair, well, milky, medium, loyal

Ex Output:
loyal


Ex Input:
down, lower, opposite of up, ground, remorseful

Ex Output:
remorseful


Ex Input:
ostrich, hoist, egret, crane, parrot

Ex Output:

hoist