Add dataset card

README.md

@@ -47,12 +47,12 @@ Use of the released dataset is governed by the Apache License, Version 2.0. The
 - **NVIDIA-produced** (`checkpoint/GEM-SMPL/outputs/`, `checkpoint/FoundationPose/`, `checkpoint/SONIC/`) — [NVIDIA Open Model License Agreement](https://www.nvidia.com/en-us/agreements/enterprise-software/nvidia-open-model-license/).
 - **Third-party** (`checkpoint/GEM-SMPL/inputs/`: HMR2, ViTPose, VIMO, YOLOv8x, SMPL-X body model) — governed by the licenses of their respective upstream releases; please consult each upstream project before use.
 
-Object USD assets and source videos under `data/<hoi_category>/{object_usd,video}/` come from four asset sources, each with different downstream-license implications:
+Object USD assets under `data/<hoi_category>/object_usd/` come from four asset sources, each with different downstream-license implications:
 
 - **RoboCasa-derived** (`pickup_table`, `pickup_ground`) — derivative works of [RoboCasa](https://robocasa.ai/) (UT Austin, NVIDIA), licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/). Attribution to the RoboCasa Team is required when redistributing or building on these specific files.
 - **ComAsset-derived** (`advanced manipulation`) — sourced from [ComAsset](https://huggingface.co/datasets/SShowbiz/ComAsset) (Kim et al., ECCV 2024), licensed under [ODC-By v1.0](https://opendatacommons.org/licenses/by/1-0/). Attribution to the ComAsset authors is required. Individual meshes in ComAsset are originally collected from SketchFab and carry their own per-mesh licenses (listed in `categories.json` of the upstream ComAsset repo) — consult those for any downstream commercial redistribution.
-- **Procedurally generated** (`curb`, `slope`, `stairs`) — GRAIL-original outputs, released under Apache License 2.0.
 - **Hunyuan3D-2.1 generated** (`advanced manipulation`, `stairs`) — outputs of [Hunyuan3D-2.1](https://github.com/Tencent-Hunyuan/Hunyuan3D-2.1). Per the [Tencent Hunyuan 3D 2.1 Community License](https://github.com/Tencent-Hunyuan/Hunyuan3D-2.1/blob/main/LICENSE), model outputs are user-owned and not subject to model-license restrictions, so these are released here under Apache License 2.0. The Hunyuan3D-2.1 *model* itself (not used or redistributed by this dataset) carries territorial, MAU, and acceptable-use constraints — consult the upstream license if you intend to use the model.
+- **Procedurally generated** (`curb`, `slope`, `stairs`) — GRAIL-original outputs, released under Apache License 2.0.
 
 The `license: apache-2.0` declared in the dataset metadata applies to the GRAIL-original outputs: motion trajectories, 4D HOI reconstructions, and per-motion metadata under `data/<hoi_category>/{robot,objects,recon,meta}/`, plus procedurally generated and Hunyuan3D-generated object assets. Bundled checkpoints under `checkpoint/`, RoboCasa-derived assets, and ComAsset-derived assets retain their respective upstream licenses as described above.