prompt: Who was the lead singer of Queen?
  
chosen.role: system
chosen.content: A chat.
chosen.role: user
chosen.content: Who was the lead singer of Queen?
  
chosen.role: assistant
chosen.content: Freddie Mercury was the lead singer of Queen from the year 1970 until his death in 1991. Since the death of Freddie, many singers have performed with the Queen, most notably Adam Lambert who has completed several world tours with Queen since 2014.
  
rejected.role: system
rejected.content: A chat.
rejected.role: user
rejected.content: Who was the lead singer of Queen?
  
rejected.role: assistant