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:
flaxen, texture, alright, fair, even

Ex Output:
alright


Ex Input:
format, image, fax, file, folder

Ex Output:
fax


Ex Input:
firm, corporation, unbending, stiff, rigged

Ex Output:

corporation