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.

Example Input: stern, frank, weenie, brash, matter of fact
Example Output: weenie

Example Input: chunky, heavy, fat, area, sugar
Example Output: sugar

Example Input: cheese, honest, bun, wienerwurst, frank
Example Output:
honest