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:
merchandise, specialty, tools, content, angry

Ex Output:
angry


Ex Input:
fair, endure, mild, color, tangle

Ex Output:
color


Ex Input:
suits, hearts, deck, board, lifeline

Ex Output:

lifeline