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: corporate 
Words: unyielding, firm, streamline, llc, private

Output: unyielding


Input: Consider Input: Category: boats 
Words: lifeline, stern, fold, deck, rudder

Output: fold


Input: Consider Input: Category: emotional status 
Words: acceptable, fine, comfortable, pretty, well


Output: pretty