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: deck, tko, rudder, level, corner

A: rudder
****
Q: run, exercise, fall, drop, leaves

A: leaves
****
Q: fly, walk, bee, pounce, bird

A:
walk
****