prompt: How is a rainbow formed?
chosen: How is a rainbow formed?
chosen: user
chosen: A rainbow is formed when the sun is shining behind you, water droplets are present in the air, and the light from the sun is refracted in the droplets and divided into its constituent colors. These colors form a rainbow arc, visible to the viewer, because of the dispersion of light refracted by the droplets.
chosen: assistant
rejected: How is a rainbow formed?
rejected: user
rejected: assistant