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: tangle, fair, impartial, dishonest, balanced

A: tangle
****
Q: mallet, winch, parrot, winch, crane

A: winch
****
Q: close, neighboring, nearest, closer, shut down

A:
shut down
****