{
    "action": "tool_call",
    "reasoning": "My last reply was not valid JSON, and no evidence is visible this turn. I'll re-query the AI_Purpose gold table so the numbers I cite are backed by a result that renders as a table.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM AI_Usage_and_Impact_on_Students_and_Professionals_by_AI_Purpose",
        "purpose": "Compare productivity, satisfaction and accuracy across AI purposes",
        "source": "gold"
    }
}