Scene: scene0690_00 (source dataset: scannet)
Grounding level: space_level — Size Understanding
Referring expression: Replace the armchair closest to the shelves with a new armchair, reducing the armchair's width by half while keeping other dimensions the same, and ensure it remains centered in its original position.
Ground-truth 3D box: width 0.54 m, length 0.91 m, height 0.85 m; center (-0.63, -1.2, 0.43); rotation angle 0