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: fly, fish, flap, bike, glide

A: fish
****
Q: elephant, duck, sprint, dog, lion

A: sprint
****
Q: inflexible, firm, ceo, leverage, concerted

A:
inflexible
****