| No TPTP formula. May not be expressible in strict first order. | Cars.kif 2838-2838 | 子類 Gasket and Device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3339-3339 | 子類 ORing and Gasket |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3810-3810 | 子類 PistonRing and Gasket |
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