| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Languages.kif 954-957 | |
| No TPTP formula. May not be expressible in strict first order. | Languages.kif 953-953 | Nigerian sign language is an instance of deaf sign language |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40547-40547 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40546-40546 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40545-40545 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners