| (subclass LightBulb ElectricLightFixture) | Cars.kif 5090-5090 | Light bulb is a subclass of electric light fixture |
| (subclass LED LightBulb) | Cars.kif 5102-5102 | LE d is a subclass of light bulb |
| (subclass FluorescentLightBulb LightBulb) | Cars.kif 5106-5106 | Fluorescent light bulb is a subclass of light bulb |
| (subclass IncandescentLightBulb LightBulb) | Cars.kif 5109-5109 | Light bulb is a subclass of light bulb |
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