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:
sail, bow, blind, dock, deck

Ex Output:
blind


Ex Input:
grasshopper, fly, swim, dangle, jog

Ex Output:
jog


Ex Input:
fair, 70, honorable, brisk, tangle

Ex Output:

honorable