Scene: 38770cb0-86d7-27b8-8466-1782505891fd (source dataset: 3RScan)
Grounding level: part_level — Function or Appearance
Referring expression: Choose the part of sofa without armrests and backrests.
Ground-truth 3D box: width 2.67 m, length 0.67 m, height 0.43 m; center (0.54, 0.3999999999999997, 1.89); rotation angle 0