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:
angry, joyful, tools, fearful, content

Ex Output:
tools


Ex Input:
sunny, tangle, clime, fair, honorable

Ex Output:
honorable


Ex Input:
cadet, sergeant, general, ubiquitous, captain

Ex Output:

ubiquitous