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: trustworthy, well, fair, loyal, stormy
Example Output: stormy

Example Input: hunting, fish, kayak, goat, raft
Example Output: goat

Example Input: fat, area, ugly, capacitance, calcium
Example Output:
calcium