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:
jog, cow, hike, duck, crouch

Ex Output:
cow


Ex Input:
dog, goose, dodge, duck, cat

Ex Output:
dodge


Ex Input:
loyal, fine, flaxen, balanced, fair

Ex Output:

flaxen