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: physical property 
Words: large, fat, capacitance, calories, ugly

Output: calories


Input: Consider Input: Category: social gathering 
Words: cinema, group, roll, place, club


Output: roll