| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | naics.kif 3107-3110 | |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 1845-1845 | Petroleum lubricant is an industry product type of petroleum lubricating oil and grease manufacturing |
| No TPTP formula. May not be expressible in strict first order. | naics.kif 3105-3105 | Petroleum lubricating oil and grease manufacturing is a subattribute of other petroleum and coal products manufacturing |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 1840-1840 | Petroleum lubricating oil and grease manufacturing is a subattribute of petroleum products manufacturing |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 45486-45486 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 45485-45485 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 45484-45484 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners