Scene: scene0496_00 (source dataset: scannet)
Grounding level: space_level — Size Understanding
Referring expression: Replace the chair in the middle of the short side of the rectangular conference table, which is facing away from the blackboard, with a chair that has both its length and width reduced to half of the original, while maintaining the alignment of the center point.
Ground-truth 3D box: width 0.28 m, length 0.32 m, height 0.95 m; center (-1.26, -0.47, 0.51); rotation angle 0