Scene: scene0621_00 (source dataset: scannet)
Grounding level: part_level — Function or Appearance
Referring expression: Find the backrest part of the gray-and-white chair positioned against the wall.
Ground-truth 3D box: width 0.19 m, length 0.56 m, height 0.32 m; center (-2.039999999999999, -0.45, 0.6600000000000001); rotation angle 0