{
    "action": "tool_call",
    "reasoning": "The question asks me to identify the most important numeric metric. From the evidence, I can see several candidates: home_score/away_score (goals), Attendance, home_xg/away_xg (expected goals), and various FIFA ranking points. Given this is a World Cup dataset, goals scored are the fundamental competitive metric that determines match outcomes and tournament progression. However, I should verify what metrics exist across all tables to make an informed choice. Let me check the world_cup table to see tournament-level metrics, and the FIFA ranking tables to understand their key measures.",
    "tool": "inspect_columns",
    "args": {
        "table": "world_cup"
    }
}