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: poker 
Words: fold, deck, board, call, knockout

Ex Output:
knockout


Ex Input:
Category: computers 
Words: hardware, sort mail, download, program, file

Ex Output:
sort mail


Ex Input:
Category: bird 
Words: flamingo, crane, neck, ostrich, davit

Ex Output:

davit