| No TPTP formula. May not be expressible in strict first order. | Languages.kif 12647-12647 | LanguageFamily est une sous-classe de langage naturel |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 6642-6642 | HmongMienLanguage est une sous-classe de LanguageFamily |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 6710-6710 | IndoEuropeanLanguage est une sous-classe de LanguageFamily |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 11122-11122 | IroquoianLanguage est une sous-classe de LanguageFamily |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 12654-12654 | SinoTibetanLanguage est une sous-classe de LanguageFamily |
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