{
    "action": "tool_call",
    "reasoning": "My previous reply could not be parsed, and no query results appear in my evidence this turn. To avoid repeating numbers I can't verify, I will re-pull the per-purpose gold table before answering.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM AI_Usage_and_Impact_on_Students_and_Professionals_by_AI_Purpose",
        "purpose": "Re-fetch per-purpose aggregates (productivity, accuracy, satisfaction) to ground the answer",
        "source": "gold"
    }
}