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: goodies, wienerwurst, frank, hot dog, brash

A: brash
****
Q: warm, optimist, hot, relaxing, cool

A: optimist
****
Q: fork, glass, lead, colander, knive

A:
lead
****