| (subclass TransitwayObstacle Object) | Mid-level-ontology.kif 15250-15250 | 过境障碍 是 客体 的 subclass |
| (subclass Dam TransitwayObstacle) | Transportation.kif 3065-3065 | 坝 是 过境障碍 的 subclass |
| (subclass CanalLockGate TransitwayObstacle) | Transportation.kif 3071-3071 | 运河闸门 是 过境障碍 的 subclass |
| (subclass Door TransitwayObstacle) | Mid-level-ontology.kif 15255-15255 | 门 是 过境障碍 的 subclass |
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