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   Helmet
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| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4361-4362 | |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4360-4360 | Helmet 是 对于 头 的 covering 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4359-4359 | Helmet 是 SafetyDevice 的 subclass |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4364-4364 | MotorcycleHelmet 是 Helmet 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 64975-64975 |
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