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: fish, stingray, climbing, trap, hiking

A: stingray
****
Q: fly, leap, glide, car, bike

A: leap
****
Q: sugars, vitamin c, carbs, fat, skinny

A:
skinny
****