| Helmet | |
| appearance as argument number 1 |
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| (documentation Helmet EnglishLanguage "Any WearableItem designed to protect the Head of the individual who wears it.") | Cars.kif 4422-4423 | |
| (subclass Helmet (CoveringFn Head)) |
Cars.kif 4421-4421 | |
| (subclass Helmet SafetyDevice) | Cars.kif 4420-4420 |
| appearance as argument number 2 |
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|
| (subclass MotorcycleHelmet Helmet) | Cars.kif 4425-4425 | |
| (termFormat EnglishLanguage Helmet "helmet") | domainEnglishFormat.kif 64969-64969 |
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