{
    "action": "tool_call",
    "reasoning": "I have comprehensive evidence about the matches and world_cup tables showing clear temporal, competitive, and structural segmentation. Now I need to check the 2026 schedule table to see if it adds any new grouping dimensions, then I can provide a complete answer about all natural segmentation patterns across the dataset.",
    "tool": "inspect_columns",
    "args": {
        "table": "schedule_2026"
    }
}