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:
rudder, bow, pack, crew, deck

Ex Output:
pack


Ex Input:
fine, content, acceptable, well, handsome

Ex Output:
handsome


Ex Input:
jog, duck, fall, squat, cow

Ex Output:

cow