{
    "action": "tool_call",
    "reasoning": "No evidence is available yet in this turn, so I can't cite the earlier numbers. I'll query the Iris_by_Species gold table to ground the claims about species averages and ranges.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM Iris_by_Species",
        "purpose": "Species-level averages, min, max and median of all four measures to compare species and check separability",
        "source": "gold"
    }
}