| appearance as argument number 1 |
|
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 1808-1808 | 鎳礦石 是 鎳礦開採 的 industry 產品類別 |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 1803-1803 | 子屬性 鎳礦開採 and 銅礦和鎳礦開採 |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40497-40497 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40496-40496 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 40495-40495 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners