| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Geography.kif 6864-6864 | 有毒化学污染问题 是 污染问题 的 instance |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 58672-58672 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 58671-58671 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 58670-58670 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners