Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Example Input: Category: moral characteristic 
Words: dishonest, ok, fair, mild, fine
Example Output: mild

Example Input: Category: shady activities 
Words: falsehood, banned, heavy, unlicensed, fudge
Example Output: heavy

Example Input: Category: baby animals 
Words: culture, fawn, doe, hatchling, cub
Example Output:
culture