Scene: scene0030_00 (source dataset: scannet)
Grounding level: part_level — Function or Appearance
Referring expression: Identify the backrest section of the armchair.
Ground-truth 3D box: width 0.43 m, length 1.02 m, height 0.55 m; center (2.4700000000000015, 2.45, 0.7300000000000002); rotation angle 0