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:
tide, current, flow, detests, whirlpool

Ex Output:
detests


Ex Input:
gunwale, deck, punch, sail, bow

Ex Output:
punch


Ex Input:
absorption, pasty, fat, large, sugar

Ex Output:

sugar