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, document, file, image, correspondence

Ex Output:
correspondence


Ex Input:
Category: fried food 
Words: croquet, dumpling, fritter, spend, patty

Ex Output:
spend


Ex Input:
Category: type of sandwich 
Words: club, roll, doorstep, discothek, toast

Ex Output:

discothek