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: dumpling, fritter, goodbye, pastry, skin
Example Output: goodbye

Example Input: bats, pounce, cockroach, bike, fly
Example Output: bike

Example Input: club, french toast, community, roll, hero
Example Output:
community