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: fly, grasshopper, walk, waggle, train

Output: train

Input: Consider Input: blunt, sausage, hot dog, frank, wienerwurst

Output: blunt

Input: Consider Input: tart, wrongful, cake, brownies, fudge
Output: wrongful