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, equitable, level, ok
Example Output: level

Example Input: fine, wispy, alright, mad, well
Example Output: wispy

Example Input: persistent, icy, relaxed, cool, unflappalbe
Example Output:
icy