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: heat, hire, burn, air, fire

A: hire
****
Q: fawn, love, calf, flatter, identity

A: calf
****
Q: well, ok, impartial, fair, windy

A:
windy
****