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: computers 
Words: folder, text, file, ram, prepare

Ex Output:
prepare


Ex Input:
Category: poker 
Words: chips, punch, deck, draw, queen

Ex Output:
punch


Ex Input:
Category: physical property 
Words: thin, brittleness, heavy, angular momentum, fat

Ex Output:

heavy