Scene: 1d23402c-e280-2b1a-8e31-9a88c9c1fb91 (source dataset: 3RScan)
Grounding level: part_level — Function or Appearance
Referring expression: Locate the backrest of the large couch.
Ground-truth 3D box: width 1.47 m, length 0.35 m, height 0.35 m; center (-0.14, -1.3, 0.69); rotation angle 174