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: cake, fudge, rich, invent, cream

Output: invent


Input: Consider Input: bow, gunwale, crew, deck, blocking

Output: blocking


Input: Consider Input: emotional state, output cord, fret, angry, crying


Output: output cord