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    },
    "left_leg": {
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    "projected_gravity": {
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    "right_arm": {
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    },
    "root_orientation": {
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      "rotation_type": "quaternion",
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    },
    "waist": {
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    }
  },
  "video": {
    "ego_view": {
      "original_key": "observation.images.ego_view"
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  }
}