| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Geography.kif 2968-2968 | Water overutilization is a subclass of social interaction |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 62441-62441 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 62440-62440 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 62439-62439 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners