The conversation between human and AI assistant.
[|Human|] Classify each of the following as a conductor or insulator: steel, copper, rubber, wood, cardboard, aluminum
[|AI|] Steel: Conductor
Copper: Conductor
Rubber: Insulator
Wood: Insulator
Cardboard: Insulator
Aluminum: Conductor
[|Human|] 
Classify each of the following as a conductor or insulator: steel, copper, rubber, wood, cardboard, aluminum