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:
emotional supports, shameful, downward, loveful, down

Ex Output:
downward


Ex Input:
ubiquitous, general, basic, major, popular

Ex Output:
major


Ex Input:
let go, flame, inferno, fire, water

Ex Output:

let go