| No TPTP formula. May not be expressible in strict first order. | Languages.kif 4602-4602 | Afro asiatic language is a subclass of spoken human language |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 4608-4608 | Berber language is a subclass of afro asiatic language |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 4670-4670 | Northern afro asiatic language is a subclass of afro asiatic language |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 5057-5057 | Chadic language is a subclass of afro asiatic language |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 14535-14535 | Cushitic language is a subclass of afro asiatic language |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 14561-14561 | Semitic language is a subclass of afro asiatic language |
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