{"task_index": 0, "task": "Pick up the red cube and stack it on the green cube with position offset when grasping."}
{"task_index": 1, "task": "Pick up the red cube and stack it on the green cube with gripper error when grasping."}
{"task_index": 2, "task": "Pick up the red cube and stack it on the green cube with position offset when stacking."}
{"task_index": 3, "task": "Pick up the red cube and stack it on the green cube without errors."}