{"task_index": 0, "task": "pick up 50ml test tube"}
{"task_index": 1, "task": "go to 50ml test tube"}
{"task_index": 2, "task": "pick up 50ml test tube from vortexer"}
{"task_index": 3, "task": "go to vortexer"}
{"task_index": 4, "task": "go to rack"}
{"task_index": 5, "task": "place 50ml test tube on vortexer"}