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: melancholy, descending, emotionalities, emotional, down

Output: descending


Input: Consider Input: jog, fly, swim, run, drive

Output: run


Input: Consider Input: format, file, support, text, download


Output: support