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.

Input: Consider Input: beautiful, classy, dull, comfortable, fine

Output: comfortable


Input: Consider Input: output cord, fret, notes, frustrated, chord

Output: frustrated


Input: Consider Input: head, deck, fight, gunwale, bridge


Output: fight