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.

Ex Input:
Category: animal 
Words: bird, fish, fly, drive, eagle

Ex Output:
drive


Ex Input:
Category: shady activities 
Words: loosen, smuggled, chocolate, wrongful, fudge

Ex Output:
chocolate


Ex Input:
Category: poker 
Words: suits, pack, queen, dock, deck

Ex Output:

dock