{
    "action": "tool_call",
    "reasoning": "My earlier draft quoted correlation values, but no query result is available in this turn to back them. I will compute the pairwise Pearson correlations across the numeric measures in one query so the answer is grounded.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT 'Usage~MentalHealth' AS pair, corr(Daily_Usage_Hours, Mental_Health_Index) AS r FROM raw.Social_media_impact_on_life UNION ALL SELECT 'Sleep~MentalHealth', corr(Sleep_Duration_Hours, Mental_Health_Index) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'Stress~MentalHealth', corr(Perceived_Stress_Score, Mental_Health_Index) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'Usage~Stress', corr(Daily_Usage_Hours, Perceived_Stress_Score) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'Sleep~SleepQuality', corr(Sleep_Duration_Hours, Sleep_Quality_Score) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'Usage~Sleep', corr(Daily_Usage_Hours, Sleep_Duration_Hours) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'Usage~GPA', corr(Daily_Usage_Hours, Academic_Performance_GPA) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'Usage~SleepQuality', corr(Daily_Usage_Hours, Sleep_Quality_Score) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'Sleep~Stress', corr(Sleep_Duration_Hours, Perceived_Stress_Score) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'SleepQuality~MentalHealth', corr(Sleep_Quality_Score, Mental_Health_Index) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'MentalHealth~GPA', corr(Mental_Health_Index, Academic_Performance_GPA) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'WeekendExtra~Usage', corr(Weekend_Extra_Hours, Daily_Usage_Hours) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'WeekendExtra~MentalHealth', corr(Weekend_Extra_Hours, Mental_Health_Index) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'WeekendExtra~GPA', corr(Weekend_Extra_Hours, Academic_Performance_GPA) FROM raw.Social_media_impact_on_life UNION ALL SELECT 'WeekendExtra~Sleep', corr(Weekend_Extra_Hours, Sleep_Duration_Hours) FROM raw.Social_media_impact_on_life ORDER BY abs(r) DESC",
        "purpose": "Pairwise Pearson correlations among usage, sleep, stress, mental health, and GPA",
        "source": "raw"
    }
}