{"database": "openregs", "table": "fr_regs_crossref", "rows": [["E9-27156", "EPA-HQ-OPA-2007-0584-0270"]], "columns": ["fr_document_number", "regs_document_id"], "primary_keys": ["fr_document_number", "regs_document_id"], "primary_key_values": ["E9-27156", "EPA-HQ-OPA-2007-0584-0270"], "units": {}, "query_ms": 0.6424190942198038, "source": "Federal Register API & Regulations.gov API", "source_url": "https://www.federalregister.gov/developers/api/v1", "license": "Public Domain (U.S. Government data)", "license_url": "https://www.regulations.gov/faq"}