| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | naics.kif 834-837 | |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 1807-1807 | Clay is an industry product type of kaolin and ball clay mining |
| No TPTP formula. May not be expressible in strict first order. | naics.kif 832-832 | Kaolin and ball clay mining is a subattribute of sand gravel clay and ceramic and refractory minerals mining and quarrying |
| appearance as argument number 2 |
|
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| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 32107-32107 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 32106-32106 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 32105-32105 |
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