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, fly, swim, run, drive

Ex Output:
run


Ex Input:
fritter, whittle, divide, misuse, dumpling

Ex Output:
dumpling


Ex Input:
pasty, fat, absorption, fiber, chunky

Ex Output:

fiber