The conversation between human and AI assistant.
[|Human|] Classify each of the following as bright or dark: sun, lamp, cave, light, night, tunnel
[|AI|] Sun: Bright
Lamp: Bright
Cave: Dark
Light: Bright
Night: Dark
Tunnel: Dark
[|Human|] 
Classify each of the following as bright or dark: sun, lamp, cave, light, night, tunnel