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:
fair, make the grade, trustworthy, alright, just

Ex Output:
make the grade


Ex Input:
up to the moment, current, detests, tide, history

Ex Output:
tide


Ex Input:
crane, goose, hummingbird, davit, steam roller

Ex Output:

steam roller