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 property 
Words: obese, heavy, area, chunky, fat

Output: heavy


Input: Consider Input: Category: outdoor sport activity 
Words: hike, cow, trap, row, fish

Output: cow


Input: Consider Input: Category: shady activities 
Words: smuggled, heavy, fudge, falsehood, fix


Output: heavy