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:
fair, raining, trustworthy, endure, 70

Ex Output:
trustworthy


Ex Input:
delayed, brine, belated, current, postponed

Ex Output:
brine


Ex Input:
organize, file, errands, reception, space

Ex Output:

space