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: hoagie, submarine, place, open-faced, club

Output: place


Input: Consider Input: melancholy, descending, emotionalities, emotional, down

Output: descending


Input: Consider Input: file, schedule appointments, make coffee, firewall, schedule


Output: firewall