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:
answer calls, image, organize, file, correspondence

Ex Output:
image


Ex Input:
alright, fine, annoyed, high quality, content

Ex Output:
high quality


Ex Input:
ok, just, unjust, fair, warm

Ex Output:

warm