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:
general, boring, soldier, ubiquitous, average

Ex Output:
soldier


Ex Input:
miserable, ground, up, opposite of up, down

Ex Output:
miserable


Ex Input:
synergy, combined, concerted, resistant, firm

Ex Output:

resistant