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: jog, fly, swim, run, drive
Example Output: run

Example Input: down, kind, ashamed, sliding, unhappy
Example Output: sliding

Example Input: pasty, calories, protein, sugar, fat
Example Output:
pasty