prompt: Write a joke about a pirate.
chosen.role: system
chosen.content: A chat.
chosen.role: user
chosen.content: Write a joke about a pirate.
chosen.role: assistant
chosen.content: Why did the pirate eat so much corn on the cob?
  Because it only cost a buck an ear! (Bucaneer)
rejected.role: system
rejected.content: A chat.
rejected.role: user
rejected.content: Write a joke about a pirate.
rejected.role: assistant