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:
invent, unlicensed, brownies, lie, fudge

Ex Output:
brownies


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

Ex Output:
steam roller


Ex Input:
fat, protein, area, capacitance, angular momentum

Ex Output:

protein