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: dog, push, duck, squat, jog

Output: dog


Input: Consider Input: Category: food 
Words: honesty, meat, hot dog, sausage, frank

Output: honesty


Input: Consider Input: Category: direction 
Words: down, backward, sliding, forward, miserable


Output: miserable