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: weather 
Words: mild, warm, fine, fair, deal

Output: fine


Input: Consider Input: Category: bird 
Words: dump truck, pelican, goose, crane, derrick

Output: dump truck


Input: Consider Input: Category: boats 
Words: hull, galley, deck, lifeline, tko


Output: tko