Scene: scene0050_00 (source dataset: scannet)
Grounding level: part_level — Function or Appearance
Referring expression: Facing the piano, focus on the smooth wooden music stand where a music sheet is likely to be placed.
Ground-truth 3D box: width 0.75 m, length 0.13 m, height 0.23 m; center (-1.19, -2.14, 0.8700000000000003); rotation angle 0