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: direction 
Words: south, loveful, down, left, falling

Output: loveful


Input: Consider Input: Category: animal 
Words: walk, flap, fish, fly, bats

Output: flap


Input: Consider Input: Category: ocean 
Words: signal, do tests, tide, current, wave


Output: do tests