{
    "action": "tool_call",
    "reasoning": "I have extensive survival analysis already showing expected patterns (women/children first, class matters, family size effects). To find the MOST surprising finding, I need to look for anomalies that contradict these patterns. Let me examine the one striking anomaly I see: large families in 3rd class had catastrophically low survival (7.4% for families of 4+, vs 40.7% for small families in 3rd class). But I should verify if there's something even more counterintuitive by checking the extreme case: families of size 4+ in 3rd class by gender.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT Sex, COUNT(*) as passengers, SUM(Survived) as survived, ROUND(100.0 * SUM(Survived) / COUNT(*), 1) as survival_rate_pct FROM raw.titanic WHERE Pclass = 3.0 AND (SibSp + Parch) >= 4 GROUP BY Sex ORDER BY Sex",
        "purpose": "Check if large families in 3rd class had different survival by gender to understand the catastrophic 7.4% survival rate",
        "source": "raw"
    }
}