Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Ex Input:
canvas, deck, corner, apron, queen

Ex Output:
queen


Ex Input:
admiral, general, cadet, sergeant, ordinary

Ex Output:
ordinary


Ex Input:
hull, box, rudder, gunwale, deck

Ex Output:

box