Classify each of the following as a conductor or insulator: steel, copper, rubber, wood, cardboard, aluminum
Steel: Conductor
Copper: Conductor
Rubber: Insulator
Wood: Insulator
Cardboard: Insulator
Aluminum: Conductor
<START_INST>Classify each of the following as a conductor or insulator: steel, copper, rubber, wood, cardboard, aluminum<END_INST><START_CTX><END_CTX><START_A>Steel: Conductor
Copper: Conductor
Rubber: Insulator
Wood: Insulator
Cardboard: Insulator
Aluminum: Conductor<END_A>