prompt: I heard the singer, Mama Cass, died by choking on a chicken bone. Is that true?
chosen: I heard the singer, Mama Cass, died by choking on a chicken bone. Is that true?
chosen: user
chosen: No, that is not true. Mama Cass died of heart failure in 1974.
chosen: assistant
rejected: I heard the singer, Mama Cass, died by choking on a chicken bone. Is that true?
rejected: user
rejected: assistant