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: hunt, whale, shark, fish, mice
Example Output: hunt

Example Input: chunky, fat, calcium, carbs, iron
Example Output: chunky

Example Input: content, food, ecstatic, item, jewelry
Example Output:
ecstatic