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.

Q: neat, beautiful, dull, fine, firstrate

A: firstrate
****
Q: geese, crouch, duck, elephant, mallet

A: crouch
****
Q: bold, frank, stern, harsh, sausage

A:
sausage
****