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: personal characteristic 
Words: freezing, calm, positive, cool, popular

Output: freezing


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

Output: whale


Input: Consider Input: Category: bird 
Words: goose, crane, hoist, ostrich, parrot


Output: hoist