| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Geography.kif 6566-6567 | |
| No TPTP formula. May not be expressible in strict first order. | Geography.kif 6565-6565 | Black cherry tree is internally related to cherry wood |
| No TPTP formula. May not be expressible in strict first order. | Geography.kif 6564-6564 | Black cherry tree is a subclass of deciduous tree |
| appearance as argument number 2 |
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|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 64566-64566 |
| consequent |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5667-5674 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners