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: impartial, fair, honorable, level, fine
Example Output: level

Example Input: fly, leap, glide, car, bike
Example Output: leap

Example Input: scorching, cool, ethical, unruffled, confident
Example Output:
scorching