| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4149-4149 | Grain is a subclass of food from plant |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4027-4027 | Cereal grain is a subclass of grain |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4161-4161 | Malt is a subclass of grain |
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