Scene: scene_00109_00 (source dataset: multiscan)
Grounding level: part_level — Spatial Relationship
Referring expression: While sitting on the sofa closest to the green suitcase, identify its left armrest.
Ground-truth 3D box: width 0.16 m, length 1.02 m, height 0.57 m; center (-2.649999999999999, -0.99, 0.45); rotation angle 0