prompt: What is the most common type of vertebrate on earth?
chosen.role: system
chosen.content: A chat.
chosen.role: user
chosen.content: What is the most common type of vertebrate on earth?
chosen.role: assistant
chosen.content: While most population estimates for animals are estimates, it is believed that the most common type of vertebrate on earth is the bristlemouth, a small fish that can live as deep as three miles beneath the ocean surface. Population ecologists estimate that there are probably thousands of trillions of bristlemouth fish.
rejected.role: system
rejected.content: A chat.
rejected.role: user
rejected.content: What is the most common type of vertebrate on earth?
rejected.role: assistant