| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 1858-1858 | Refrigeration equipment manufacturing is an instance of industry attribute |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 1850-1850 | Refrigeration equipment manufacturing is a subattribute of refrigerator and freezer industry |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 49172-49172 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 49171-49171 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 49170-49170 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners