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: bow, gunwale, crew, deck, blocking

Output: blocking


Input: Consider Input: dog, goose, dodge, duck, cat

Output: dodge


Input: Consider Input: steam roller, swallow, dump truck, windlass, crane


Output: swallow