(subclass Flatcar FreightCar) | Transportation.kif 2176-2176 | Flatcar is a subclass of freight car |
(subclass Flatcar OpenTopRailcar) | Transportation.kif 2177-2177 | Flatcar is a subclass of open top railcar |
(subclass SpineCar Flatcar) | Transportation.kif 2228-2228 | Spine car is a subclass of flatcar |