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Sigma KEE - Helmet
Helmetbatting_helmet, casque, crash_helmet, football_helmet, hard_hat, headpiece, heaume, helmet, safety_hat, space_helmet, tin_hat

appearance as argument number 1

(documentation Helmet EnglishLanguage "Any WearableItem designed to protect the Head of the individual who wears it.") Cars.kif 4364-4365
(subclass Helmet
    (CoveringFn Head))
Cars.kif 4363-4363 Helmet is a subclass of a covering for head
(subclass Helmet SafetyDevice) Cars.kif 4362-4362 Helmet is a subclass of safety device

appearance as argument number 2

(subclass MotorcycleHelmet Helmet) Cars.kif 4367-4367 Motorcycle helmet is a subclass of Helmet

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