{
    "action": "tool_call",
    "reasoning": "No evidence is available yet, and the earlier reply described rows I never queried. I'll fetch the 15-row sample first so any description is grounded in an executed result.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT Student_ID, Age, Gender, Academic_Level, Primary_Platform, Daily_Usage_Hours, Weekend_Extra_Hours, Device_Type, Sleep_Duration_Hours, Sleep_Quality_Score, Late_Night_Usage, Social_Comparison_Frequency, Perceived_Stress_Score, Mental_Health_Index, Academic_Performance_GPA, Overall_Impact FROM raw.Social_media_impact_on_life ORDER BY Student_ID LIMIT 15",
        "purpose": "Show a 15-row sample of the table ordered by Student_ID",
        "source": "raw"
    }
}