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: warm, optimist, hot, relaxing, cool

A: optimist
****
Q: goodies, weenie, blunt, wiener, frank

A: blunt
****
Q: apron, joker, cards, deck, draw

A:
apron
****