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: belated, moon, current, data sets, do tests
Example Output: moon

Example Input: provision, frank, hot dog, goodies, harsh
Example Output: harsh

Example Input: fair, brisk, alright, equitable, loyal
Example Output:
brisk