| (subclass ChemicalAcid CompoundSubstance) | Mid-level-ontology.kif 8721-8721 | Chemical acid is a subclass of compound substance |
| (subclass ChemicalAcid Substance) | Cars.kif 2471-2471 | Chemical acid is a subclass of substance |
| (subclass AminoAcid ChemicalAcid) | Mid-level-ontology.kif 8695-8695 | Amino acid is a subclass of chemical acid |
| (subclass SulfuricAcid ChemicalAcid) | Cars.kif 2479-2479 | Sulfuric acid is a subclass of chemical acid |
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