No TPTP formula. May not be expressible in strict first order. | Transportation.kif 2047-2047 | Train is a subclass of rail vehicle |
No TPTP formula. May not be expressible in strict first order. | Transportation.kif 2048-2048 | Train is a subclass of powered vehicle |
No TPTP formula. May not be expressible in strict first order. | Transportation.kif 2049-2049 | Train is a subclass of collection |