prompt: Who was credited with the discovery of penicillin? How was it discovered?
chosen.role: system
chosen.content: A chat.
chosen.role: user
chosen.content: Who was credited with the discovery of penicillin? How was it discovered?
chosen.role: assistant
chosen.content: Penicillin was discovered in 1928  by Dr. Alexander Fleming . He discovered it accidentally when he returned from a holiday to find mold growing on a Petri dish of Staphylococcus bacteria in his lab. He noticed the mold seemed to be preventing the bacteria around it from growing and soon identified that the mold produced a self-defense chemical that could kill bacteria. He named the substance penicillin.  
rejected.role: system
rejected.content: A chat.
rejected.role: user
rejected.content: Who was credited with the discovery of penicillin? How was it discovered?
rejected.role: assistant