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: physical activity 
Words: bend, winter, fall, climb, exercise

Output: winter


Input: Consider Input: Category: boxing terminology 
Words: corner, fold, deck, knockout, level

Output: fold


Input: Consider Input: Category: physical activity 
Words: run, exercise, fall, drop, leaves


Output: leaves