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: fish, hike, hunting, row, dog

Output: dog


Input: Consider Input: Category: food 
Words: sausage, loyalty, grub, frank, provision

Output: loyalty


Input: Consider Input: Category: physical activity 
Words: hiems, drop, fall, stoop, run


Output: hiems