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:
hire, flame, pay, fire, ban

Ex Output:
flame


Ex Input:
apartment, round, valley, flat, even

Ex Output:
valley


Ex Input:
fair, luke, texture, sunny, endure

Ex Output:

texture