(subclass DisplacementHullWaterVehicle WaterVehicle) | Transportation.kif 2297-2297 | DisplacementHullWaterVehicle は WaterVehicle の subclass では %n |
(subclass Ship DisplacementHullWaterVehicle) | Transportation.kif 2303-2303 | Ship は DisplacementHullWaterVehicle の subclass では %n |