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, wave, whirlpool, sea, data sets

Output: data sets


Input: Consider Input: Category: shady activities 
Words: fudge, banned, brownie, unwarranted, fib

Output: brownie


Input: Consider Input: Category: emotional status 
Words: miserable, south, shameful, emotional, down


Output: south