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: shady activities 
Words: replace, unwarranted, pie, fudge, unlicensed
Example Output: pie

Example Input: Category: weather 
Words: fair, unprejudiced, raining, windy, endure
Example Output: unprejudiced

Example Input: Category: moral characteristic 
Words: unprejudiced, fair, variety, unjust, decent
Example Output:
variety