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.

Input: Consider Input: Category: police punishment 
Words: jail, fine, bright, arrest, flyaway

Output: bright


Input: Consider Input: Category: outdoor sport activity 
Words: whale, fish, raft, hiking, kayak

Output: whale


Input: Consider Input: Category: measurement unit 
Words: foot, kilometer, ounce, ear, mile


Output: ear