| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 9342-9342 | Opium e' uma sub-classe de Substancia Biologica Ativa |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 9343-9343 | Opium e' uma sub-classe de PlantSubstance |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 9346-9346 | Opium e' uma sub-classe de Depressant |
| No TPTP formula. May not be expressible in strict first order. | Medicine.kif 6409-6409 | Opium e' uma sub-classe de Analgesic |
| No TPTP formula. May not be expressible in strict first order. | Economy.kif 4785-4785 | Opium e' uma sub-classe de Narcotic |
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