{
    "action": "tool_call",
    "reasoning": "I have results for Sex, Pclass, and Survived. The card lists two more classifiers: Cabin (~163 distinct) and Parch (~7 distinct). I need to query these to complete the picture of all main categorical columns. I'll get the frequency distribution for both in one query.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT Cabin, COUNT(*) as frequency, ROUND(100.0 * COUNT(*) / (SELECT COUNT(*) FROM raw.titanic), 1) as percentage FROM raw.titanic WHERE Cabin IS NOT NULL GROUP BY Cabin ORDER BY frequency DESC LIMIT 10",
        "purpose": "Get top 10 most common Cabin values with frequencies and percentages"
    }
}