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: aesthetic characteristic 
Words: fair, size, medium, dishonest, level
Example Output: dishonest

Example Input: Category: police punishment 
Words: probation, jail, arrest, fine, beautiful
Example Output: beautiful

Example Input: Category: ocean 
Words: drink, blue, flow, timely, current
Example Output:
timely