{
    "action": "tool_call",
    "reasoning": "No query results are visible in the evidence, so I will re-run the exact-duplicate check to ground the answer before making claims.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT sepal_length, sepal_width, petal_length, petal_width, species, COUNT(*) AS copies FROM raw.iris GROUP BY sepal_length, sepal_width, petal_length, petal_width, species HAVING COUNT(*) > 1 ORDER BY copies DESC",
        "purpose": "Find exact duplicate rows across all four measurements plus species",
        "source": "raw"
    }
}