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:
invent, smuggled, smear, fudge, pie

Ex Output:
pie


Ex Input:
ear, mile, foot, eye, ankle

Ex Output:

mile