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:
dock, canvas, deck, blocking, caution

Ex Output:
dock


Ex Input:
unwarranted, fudge, pudding, lie, unlicensed

Ex Output:
pudding


Ex Input:
frank, precise, integrity, pork, matter of fact

Ex Output:

pork