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: bow, fold, hull, deck, head
Example Output: fold

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

Example Input: galley, level, punch, ring, deck
Example Output:
galley