{
    "action": "tool_call",
    "reasoning": "No evidence is available yet in this turn, so I need to compute the correlations and Overall_Impact group averages before making any claims.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) AS n, CORR(Daily_Usage_Hours, Mental_Health_Index) AS usage_mh, CORR(Daily_Usage_Hours, Sleep_Duration_Hours) AS usage_sleep, CORR(Daily_Usage_Hours, Academic_Performance_GPA) AS usage_gpa, CORR(Daily_Usage_Hours, Sleep_Quality_Score) AS usage_sleepq, CORR(Daily_Usage_Hours, Perceived_Stress_Score) AS usage_stress, CORR(Weekend_Extra_Hours, Daily_Usage_Hours) AS wk_usage, CORR(Weekend_Extra_Hours, Mental_Health_Index) AS wk_mh, CORR(Weekend_Extra_Hours, Academic_Performance_GPA) AS wk_gpa, CORR(Weekend_Extra_Hours, Sleep_Duration_Hours) AS wk_sleep, CORR(Weekend_Extra_Hours, Perceived_Stress_Score) AS wk_stress, CORR(Age, Academic_Performance_GPA) AS age_gpa FROM raw.Social_media_impact_on_life",
        "purpose": "Compute correlations of daily usage, weekend extra hours and age with outcome measures",
        "source": "raw"
    }
}