Scene: scene0684_00 (source dataset: scannet)
Grounding level: part_level — Function or Appearance
Referring expression: Select the backrest part of the chair.
Ground-truth 3D box: width 0.21 m, length 0.43 m, height 0.38 m; center (-0.4999999999999998, 0.82, 0.6699999999999999); rotation angle 0