| (subclass GamePiece GameArtifact) | Mid-level-ontology.kif 17000-17000 | 游戏片 是 游戏神器 的 subclass |
| (subclass RugbyBall GamePiece) | Sports.kif 324-324 | RugbyBall 是 游戏片 的 subclass |
| (subclass Football GamePiece) | Sports.kif 344-344 | 足球 是 游戏片 的 subclass |
| (subclass GameDie GamePiece) | Mid-level-ontology.kif 17004-17004 | 游戏死了 是 游戏片 的 subclass |
| (subclass Ball GamePiece) | Mid-level-ontology.kif 17008-17008 | 球 是 游戏片 的 subclass |
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