Input question: What paddle-based game was the first commercially successful video game?

Output answer: pong

Input question: What's the first rule of Fight Club?

Output answer: do not talk about fight club

Input question: What is the Italian word, meaning 'head', for the clamp-like gadget used on guitars and other fretted stringed instruments to change key and tuning?

Output answer: capo

Input question: In the US, which state borders the south of Kansas?

Output answer:
oklahoma