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: acceptable, mad, fine, comfortable, probation

A: probation
****
Q: crane, winch, mallet, winch, flamingo

A: winch
****
Q: pork, grub, frank, honesty, entree

A:
honesty
****