| (subclass Oil CompoundSubstance) | Mid-level-ontology.kif 8808-8808 | Oil is a subclass of compound substance |
| (subclass PetroleumProduct Oil) | Mid-level-ontology.kif 1677-1677 | Petroleum product is a subclass of oil |
| (subclass AnimalFat Oil) | Food.kif 2871-2871 | Animal fat is a subclass of oil |
| (subclass ButterFat Oil) | Food.kif 2930-2930 | Butter fat is a subclass of oil |
| (subclass OilFromPlant Oil) | Economy.kif 4526-4526 | Oil from plant is a subclass of oil |
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