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:
honesty, frank, matter of fact, fortitude, goodies

Ex Output:
goodies


Ex Input:
falsification, fib, invent, fudge, cupcake

Ex Output:
cupcake


Ex Input:
calm, arrest, mad, fine, ok

Ex Output:

arrest