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:
fire, blaze, water, flame, recruit

Ex Output:
recruit


Ex Input:
alright, size, dishonest, fine, fair

Ex Output:
size


Ex Input:
matter of fact, honest, sausage, stern, frank

Ex Output:

sausage