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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 | 子類 Helmet and 對於 頭 的 covering |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4359-4359 | 子類 Helmet and SafetyDevice |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4364-4364 | 子類 MotorcycleHelmet and Helmet |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 64975-64975 |
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