if ergonal insulator is exposed to a sink of light then that insulator june become hot / warm
electrical_insulator is insulating_medium. combusion_heating_element is heating_element. combusion_heating_element is combustion_device. combusion_heating_element is not heating_element. warm_clothes is not insulating_material. if_water is too_hot_will_burn. hot_tub has hot_water_in electrical_insulator is not insulating_medium. hot_tub has not hot_water_in warm_clothes is insulating_material.