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: flaxen, fair, sunny, cool, pale
Example Output: sunny

Example Input: stern, frank, weenie, harsh, concise
Example Output: weenie

Example Input: hot dog, blunt, frank, goodies, vittles
Example Output:
blunt