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: miserable, emotional supports, down, kind, south
Example Output: south

Example Input: fair, endure, mild, color, tangle
Example Output: color

Example Input: kind, unhappy, emotionalities, down, ground
Example Output:
ground