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:
schedule, errands, file, schedule appointments, hardware

Ex Output:
hardware


Ex Input:
alright, detached, fine, acceptable, bright

Ex Output:
bright


Ex Input:
neat, exquisite, wispy, classy, fine

Ex Output:

wispy