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: ocean 
Words: current, early, water, brine, tide

Output: early


Input: Consider Input: Category: body part 
Words: inch, head, foot, ear, finger

Output: inch


Input: Consider Input: Category: aesthetic characteristic 
Words: color, fair, milky, brisk, tone


Output: brisk