| No TPTP formula. May not be expressible in strict first order. | Cars.kif 91-91 | IntermittentCombustionEngine 是 内燃机 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 96-96 | FourStrokeEngine 是 IntermittentCombustionEngine 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 240-240 | TwoStrokeEngine 是 IntermittentCombustionEngine 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4548-4548 | TwoCylinderEngine 是 IntermittentCombustionEngine 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4556-4556 | FourCylinderEngine 是 IntermittentCombustionEngine 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4564-4564 | SixCylinderEngine 是 IntermittentCombustionEngine 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4572-4572 | EightCylinderEngine 是 IntermittentCombustionEngine 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4865-4865 | MiniCooperEngine 是 IntermittentCombustionEngine 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4977-4977 | ChevroletEngine 是 IntermittentCombustionEngine 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 5172-5172 | CosworthEngine 是 IntermittentCombustionEngine 的 subclass |
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