| No TPTP formula. May not be expressible in strict first order. | Transportation.kif 2592-2592 | Rocket is a subclass of aircraft |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 17719-17719 | Rocket is a subclass of spacecraft |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 22074-22074 | Rocket is a subclass of projectile |
| No TPTP formula. May not be expressible in strict first order. | MilitaryDevices.kif 1301-1301 | RPG is a subclass of rocket |
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