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.

Example Input: misuse, danish, fritter, dally, whittle
Example Output: danish

Example Input: level, knockout, deck, fight, gunwale
Example Output: gunwale

Example Input: hearts, sail, fold, deck, board
Example Output:
sail