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:
concrete pourer, winch, excavator, hoist, crane

Ex Output:
hoist


Ex Input:
goose, cow, bend, lion, duck

Ex Output:
bend


Ex Input:
wiener, honesty, concise, frank, harsh

Ex Output:

wiener