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: even, size, fair, level, ok

A: ok
****
Q: mad, beautiful, comfortable, fine, relaxed

A: beautiful
****
Q: follow, expression, colt, pester, fawn

A:
colt
****