{
    "action": "tool_call",
    "reasoning": "No query results are visible in evidence, so I need to ground the per-species figures before answering. The gold table Iris_by_Species already holds them.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM Iris_by_Species ORDER BY PetalLengthCm__avg",
        "purpose": "Per-species avg/min/max/median of each measurement to compare sepal vs petal separation",
        "source": "gold"
    }
}