{
    "action": "tool_call",
    "reasoning": "No evidence has been gathered yet, so the numbers in my earlier draft are unverified. I'll compute the correlations in a single query over the raw table.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) AS n, corr(Daily_Usage_Hours, Mental_Health_Index) AS daily_vs_mental, corr(Daily_Usage_Hours, Sleep_Duration_Hours) AS daily_vs_sleep, corr(Daily_Usage_Hours, Academic_Performance_GPA) AS daily_vs_gpa, corr(Daily_Usage_Hours, Sleep_Quality_Score) AS daily_vs_sleepq, corr(Daily_Usage_Hours, Perceived_Stress_Score) AS daily_vs_stress, corr(Sleep_Duration_Hours, Mental_Health_Index) AS sleep_vs_mental, corr(Perceived_Stress_Score, Mental_Health_Index) AS stress_vs_mental, corr(Academic_Performance_GPA, Mental_Health_Index) AS gpa_vs_mental, corr(Weekend_Extra_Hours, Daily_Usage_Hours) AS wk_vs_daily, corr(Weekend_Extra_Hours, Mental_Health_Index) AS wk_vs_mental, corr(Weekend_Extra_Hours, Academic_Performance_GPA) AS wk_vs_gpa, corr(Weekend_Extra_Hours, Sleep_Duration_Hours) AS wk_vs_sleep, corr(Age, Academic_Performance_GPA) AS age_vs_gpa FROM raw.Social_media_impact_on_life",
        "purpose": "Verify correlations between usage, wellbeing and outcomes",
        "source": "raw"
    }
}