["region:us"]
[{"name": "audio", "dtype": "audio"}, {"name": "text", "dtype": "string"}, {"name": "metadata", "struct": [{"name": "duration", "dtype": "float64"}, {"name": "end_time", "dtype": "float64"}, {"name": "language", "dtype": "string"}, {"name": "source", "dtype": "string"}, {"name": "start_time", "dtype": "float64"}]}]