| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Transportation.kif 2889-2891 | |
| No TPTP formula. May not be expressible in strict first order. | Transportation.kif 2888-2888 | Uni modal transit system is a subclass of transit system |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 59984-59984 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 59983-59983 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 59982-59982 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners