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:
fawn, social, cub, kid, colt

Ex Output:
social


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

Ex Output:
schedule appointments


Ex Input:
honest, brash, vittles, frank, concise

Ex Output:

vittles