{
    "action": "tool_call",
    "reasoning": "I need to see a sample row from raw.popular_matches to accurately describe what a single row represents in that table, complementing the sample I already have for raw.fighters.",
    "tool": "query_sql",
    "args": {
        "purpose": "Get a sample row from raw.popular_matches to understand its structure.",
        "source": "raw",
        "sql": "SELECT * FROM raw.popular_matches LIMIT 3;"
    }
}