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: entree, honest, loyalty, frank, fortitude
Example Output: entree

Example Input: fish, bat, mice, dog, hiking
Example Output: hiking

Example Input: hoagie, bacon, outing, club, open-faced
Example Output:
outing