| Helmet(helmet) | | batting_helmet, casque, crash_helmet, football_helmet, hard_hat, headpiece, heaume, helmet, safety_hat, space_helmet, tin_hat |
| 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 is a subclass of a covering for head |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4359-4359 | Helmet is a subclass of safety device |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4364-4364 | Motorcycle helmet is a subclass of helmet |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 64975-64975 |
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