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:
flamingo, crane, davit, pelican, derrick

Ex Output:
davit


Ex Input:
fight, chips, deck, canvas, box

Ex Output:
chips


Ex Input:
luke, fair, stormy, windy, equitable

Ex Output:

equitable