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: weather 
Words: impartial, 70, warm, fair, luke

Ex Output:
impartial


Ex Input:
Category: poker 
Words: ring, deck, blind, cards, joker

Ex Output:
ring


Ex Input:
Category: animal 
Words: pounce, bee, walk, fly, spider

Ex Output:

walk