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:
sausage, hot dog, concise, frank, weenie

Ex Output:
concise


Ex Input:
tackle, davit, swift, crane, steam roller

Ex Output:
steam roller


Ex Input:
harsh, pork, entree, frank, bun

Ex Output:

harsh