| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Cars.kif 5063-5063 | IncandescentLightFixture 是 ElectricLightFixture 的 subclass |
| appearance as argument number 2 |
|
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| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 65026-65026 |
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Sigma web home Suggested Upper Merged Ontology (SUMO) web home
Sigma version 3.0 is open source software produced by Articulate Software and its partners