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: dangle, fly, bee, bats, bike

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

A: optimist
****
Q: concise, weenie, harsh, frank, matter of fact

A:
weenie
****