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:
frank, bold, brash, precise, pork

Ex Output:
pork


Ex Input:
crane, davit, swift, upraise, hoist

Ex Output:
swift


Ex Input:
bored, fret, inlays, string, jack

Ex Output:

bored