| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3375-3375 | VehicleSafetyDevice 是 SafetyDevice 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3624-3624 | AutoAirbag 是 VehicleSafetyDevice 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3658-3658 | SeatBelt 是 VehicleSafetyDevice 的 subclass |
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