| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4865-4867 | |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4864-4864 | Oil from plant is a subclass of oil |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4883-4883 | Tea tree oil is a subclass of oil from plant |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4896-4896 | Vegetable oil is a subclass of oil from plant |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4868-4868 | Vegetable oil is a subclass of oil from plant |
| antecedent |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4870-4881 |
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