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: unflappalbe, refreshing, funny, cool, confident

A: refreshing
****
Q: deck, check, joker, board, bridge

A: bridge
****
Q: provision, frank, hot dog, goodies, harsh

A:
harsh
****