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: sunny, alright, deal, fair, tangle

Ex Output:
alright


Ex Input:
Category: boxing terminology 
Words: pack, level, deck, corner, jab

Ex Output:
pack


Ex Input:
Category: mode of transportation 
Words: walk, wave, car, fly, bee

Ex Output:

bee