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: down, lower, emotional upsets, below, falling

Output: emotional upsets


Input: Consider Input: Category: bird 
Words: dump truck, tackle, crane, hoist, davit

Output: dump truck


Input: Consider Input: Category: animal 
Words: fly, beetle, bats, drive, dangle


Output: drive