| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3358-3358 | Safety device is a subclass of device |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 30826-30826 | Climbing carabiner is a subclass of safety device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3383-3383 | Vehicle safety device is a subclass of safety device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3427-3427 | Safety harness is a subclass of safety device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3452-3452 | Hearing protection is a subclass of safety device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3486-3486 | Protective eyewear is a subclass of safety device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3534-3534 | Respirator is a subclass of safety device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3563-3563 | Safety vest is a subclass of safety device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4367-4367 | Helmet is a subclass of safety device |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 4750-4750 | Motorcycle glove is a subclass of safety device |
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