(subclass WaterBoard BoardOrBlock) | Sports.kif 1265-1265 | WaterBoard は BoardOrBlock の subclass では %n |
(subclass Surfboard WaterBoard) | Sports.kif 210-210 | Surfboard は WaterBoard の subclass では %n |
(subclass WindSurfingBoard WaterBoard) | Sports.kif 1278-1278 | WindSurfingBoard は WaterBoard の subclass では %n |