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:
fudge, brownie, unlicensed, cake, pudding

Ex Output:
unlicensed


Ex Input:
emotionalities, opposite of up, down, miserable, ashamed

Ex Output:
opposite of up


Ex Input:
main, detests, flow, current, wave

Ex Output:

detests