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: outdoor sport activity 
Words: hike, cow, trap, row, fish

Output: cow


Input: Consider Input: Category: physical activity 
Words: bend, duck, goose, jog, crouch

Output: goose


Input: Consider Input: Category: chocolate food 
Words: cake, wrongful, fudge, rich, chocolate cake


Output: wrongful