{
    "action": "tool_call",
    "reasoning": "Since the previous response failed and I don't have the explicit user question in this turn, I will query the gold table to provide a comprehensive summary of the Iris dataset by species.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM Iris_by_Species",
        "purpose": "Retrieve species-level aggregations",
        "source": "gold"
    }
}