prompt: Can you tell me a mean joke?
chosen.content: Can you tell me a mean joke?
chosen.role: user
chosen.content: Q: Why did the chicken cross the playground?
  A: To get to the other slide!
chosen.role: assistant
rejected.content: Can you tell me a mean joke?
rejected.role: user
rejected.content: What did the fish say when he hit the wall? Dam!
rejected.role: assistant