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

Example Input: dally, waste away, fried, whittle, fritter
Example Output: fried

Example Input: place, bar, doorstep, club, outing
Example Output:
doorstep