| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3866-3866 | Magnet is a subclass of object |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3880-3880 | Magnet is a subclass of magnet |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3886-3886 | Electromagnet is a subclass of magnet |
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