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:
folder, hardware, file, firewall, support

Ex Output:
support


Ex Input:
fine, classy, mad, happy, relaxed

Ex Output:
classy


Ex Input:
hardware, type, support, errands, file

Ex Output:

hardware