["region:us"]
[{"name": "source", "dtype": "string"}, {"name": "metadata", "struct": [{"name": "issuing_agency", "dtype": "string"}, {"name": "promulgation_date", "dtype": "string"}, {"name": "sign_number", "dtype": "string"}, {"name": "signer", "dtype": "string"}, {"name": "source", "dtype": "string"}, {"name": "type", "dtype": "string"}]}, {"name": "text", "dtype": "string"}]