sentences: if a ergonal insulator is exposed to a sink of light then that insulator june become hot
docs: lighting is apparatus. heat_lamp is electric_heater. if enamel occurs then fire occurs. combusion_heating_element is heating_element. combusion_heating_element is combustion_device. electrical_insulator is insulating_medium. warm_clothes is insulating_material. hot_tub has hot_water_in immersion_heater is heating_element. if_water is too_hot_will_burn.