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: running., close, bordering, nearer, touching

A: running.
****
Q: bats, pounce, cockroach, bike, fly

A: bike
****
Q: neck, heron, hummingbird, davit, crane

A:
davit
****