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:
doughnut, fritter, fried, pie, seperate

Ex Output:
seperate


Ex Input:
deck, board, corner, knockout, fight

Ex Output:
board


Ex Input:
culture, doe, colt, bambi, fawn

Ex Output:

culture