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: descending, disgusted, emotionalities, emotional supports, down
Example Output: descending

Example Input: fair, even, milky, ghostly, luke
Example Output: luke

Example Input: closer, finished for the day, close, running., not open
Example Output:
closer