| No TPTP formula. May not be expressible in strict first order. | Transportation.kif 1923-1923 | 子類 週期 and 陸地車輛 |
| No TPTP formula. May not be expressible in strict first order. | Transportation.kif 1924-1924 | 子類 週期 and 代理動力車輛 |
| No TPTP formula. May not be expressible in strict first order. | Transportation.kif 1929-1929 | 子類 自行車 and 週期 |
|
|