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:
deal, fair, endure, windy, ghostly

Ex Output:
ghostly


Ex Input:
pack, hearts, deck, queen, rudder

Ex Output:
rudder


Ex Input:
jog, fly, pounce, bats, ant

Ex Output:

jog