| (subclass LightBulb ElectricLightFixture) | Cars.kif 5082-5082 | LightBulb 是 ElectricLightFixture 的 subclass |
| (subclass LED LightBulb) | Cars.kif 5094-5094 | LED 是 LightBulb 的 subclass |
| (subclass FluorescentLightBulb LightBulb) | Cars.kif 5098-5098 | FluorescentLightBulb 是 LightBulb 的 subclass |
| (subclass IncandescentLightBulb LightBulb) | Cars.kif 5101-5101 | IncandescentLightBulb 是 LightBulb 的 subclass |
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