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, waggle, pounce, fly, bats

Ex Output:
jog


Ex Input:
level, flat, apartment, squashed, lined

Ex Output:
lined


Ex Input:
ring, blocking, box, deck, rudder

Ex Output:

rudder