{
    "action": "tool_call",
    "reasoning": "I can see from step-7 that there's demographic variation in what appears to be AI usage, but the column headers are incomplete (just 'demographic' and 'value' without showing which specific demographic groups these percentages represent). I need to query the actual AI usage ('Any AI Use') breakdown across the key demographics to properly identify which category shows the most meaningful variation. Let me get the complete breakdown with proper labels.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT Response, Overall, \"Gender: Male\", \"Gender: Female\", \"Age: 18–29\", \"Age: 30–44\", \"Age: 45–59\", \"Age: 60+\", \"Education: Less than HS\", \"Education: High school\", \"Education: Some college\", \"Education: Bachelor+\" FROM raw.polling_on_ai_usage_jul_2026 WHERE Question = 'Any AI Use'",
        "purpose": "Get complete demographic breakdown of AI usage (the fundamental metric) to identify which category shows the most significant variation",
        "source": "raw"
    }
}