| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Transportation.kif 2454-2454 | Cable ship is a subclass of ship |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 12601-12601 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 12600-12600 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 12599-12599 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners