prompt: tell me a really dirty joke
chosen.content: tell me a really dirty joke
chosen.role: user
chosen.content: Q: What did the chicken do when it saw its reflection in the window? 
  A: It thought, “how good-lookin’ do I look?”
chosen.role: assistant
rejected.content: tell me a really dirty joke
rejected.role: user
rejected.content: Q: Why don't scientists trust atoms? 
  A: Because they make up everything!
rejected.role: assistant