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:
condominium, duplex, studio, flat, level

Ex Output:
level


Ex Input:
pie, fried, misuse, fritter, cake

Ex Output:
misuse


Ex Input:
hearing, fine, firstrate, jail, high quality

Ex Output:

high quality