| appearance as argument number 1 |
|
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 13672-13674 | |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 13671-13671 | North central birds head language is a subclass of birds head language |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 13678-13678 | Central birds head language is a subclass of north central birds head language |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 13707-13707 | North birds head language is a subclass of north central birds head language |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40995-40995 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40994-40994 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40993-40993 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners