{
    "action": "tool_call",
    "reasoning": "No tool results appear in my evidence for this turn, so I can't cite the earlier numbers. I'll re-pull the row and column counts from the catalog overview before answering the size question.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT table_name, row_count, column_count FROM analytics.table_overview ORDER BY row_count DESC",
        "purpose": "Verify row and column counts per table for the dataset size answer",
        "source": "raw"
    }
}