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:
sausage, matter of fact, frank, vittles, grub

Ex Output:
matter of fact


Ex Input:
fire, blaze, water, flame, recruit

Ex Output:
recruit


Ex Input:
honorable, fair, stormy, sunny, endure

Ex Output:

honorable