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: temperature 
Words: cold, hot, cool, popular, relaxing

Output: popular


Input: Consider Input: Category: shady activities 
Words: loosen, smuggled, chocolate, wrongful, fudge

Output: chocolate


Input: Consider Input: Category: animal 
Words: shark, whale, hiking, bat, fish


Output: hiking