| No TPTP formula. May not be expressible in strict first order. | Merge.kif 14758-14758 | Gas mixture is a subclass of mixture |
| No TPTP formula. May not be expressible in strict first order. | Merge.kif 14753-14753 | Suspension is a subclass of gas mixture |
| No TPTP formula. May not be expressible in strict first order. | Merge.kif 14772-14772 | Cloud is a subclass of gas mixture |
| No TPTP formula. May not be expressible in strict first order. | Merge.kif 14817-14817 | Air is a subclass of gas mixture |
| No TPTP formula. May not be expressible in strict first order. | Geography.kif 7542-7542 | Aerosal is a subclass of gas mixture |
| No TPTP formula. May not be expressible in strict first order. | Cars.kif 67-67 | Fuel vapor is a subclass of gas mixture |
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