{
    "action": "tool_call",
    "reasoning": "My previous draft cited correlations and group averages that are not in the evidence, so I need to compute them. I'll run one query for the correlations between usage, weekend hours, age and the outcome measures.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) AS n, CORR(Daily_Usage_Hours, Mental_Health_Index) AS daily_mental, CORR(Daily_Usage_Hours, Sleep_Duration_Hours) AS daily_sleep, CORR(Daily_Usage_Hours, Academic_Performance_GPA) AS daily_gpa, CORR(Daily_Usage_Hours, Sleep_Quality_Score) AS daily_sleepq, CORR(Daily_Usage_Hours, Perceived_Stress_Score) AS daily_stress, CORR(Weekend_Extra_Hours, Daily_Usage_Hours) AS wk_daily, CORR(Weekend_Extra_Hours, Mental_Health_Index) AS wk_mental, CORR(Weekend_Extra_Hours, Academic_Performance_GPA) AS wk_gpa, CORR(Weekend_Extra_Hours, Sleep_Duration_Hours) AS wk_sleep, CORR(Age, Academic_Performance_GPA) AS age_gpa FROM raw.Social_media_impact_on_life",
        "purpose": "Compute correlations of daily and weekend usage hours and age with outcome measures",
        "source": "raw"
    }
}