{
    "action": "tool_call",
    "reasoning": "The earlier draft cited results I can't see in the evidence, so I'm re-running the exact-duplicate check to ground the answer.",
    "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 measurement rows in raw.iris",
        "source": "raw"
    }
}