| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5406-5407 | |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5405-5405 | Softwood is a subclass of wood product |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5280-5280 | Hardwood is disjoint from softwood |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5279-5279 | Hardwood is exhaustively partitioned into softwood |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5418-5418 | Cedar wood is a subclass of softwood |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5428-5428 | Fir wood is a subclass of softwood |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5438-5438 | Larch wood is a subclass of softwood |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5458-5458 | PineWood is a subclass of softwood |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5448-5448 | Spruce wood is a subclass of softwood |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 65513-65513 |
| antecedent |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 5409-5416 |
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