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:
fine, prime, arrest, hot, jail time

Ex Output:
hot


Ex Input:
fine, level, pretty, mad, detailed

Ex Output:
mad


Ex Input:
elevation, level, round, flat, townhome

Ex Output:

elevation