["region:us"]
[{"name": "problem", "dtype": "string"}, {"name": "solution", "dtype": "string"}, {"name": "answer", "dtype": "string"}, {"name": "subject", "dtype": "string"}, {"name": "level", "dtype": "int64"}, {"name": "unique_id", "dtype": "string"}, {"name": "responses", "sequence": "string"}, {"name": "response_answers", "sequence": "string"}, {"name": "is_correct", "sequence": "bool"}]