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.

Ex Input:
motherboard, folder, hardware, file, schedule appointments

Ex Output:
schedule appointments


Ex Input:
hull, galley, deck, lifeline, tko

Ex Output:
tko


Ex Input:
community, bacon, hero, hoagie, club

Ex Output:

community