<invoke name="query_sql"> <parameter name="sql">SELECT user_id, age, gender, occupation_type, chronotype, primary_bedtime_app, screen_brightness_pct, blue_light_filter_active, caffeine_post_5pm_mg, physical_activity_min, sleep_latency_min, total_sleep_hours, deep_sleep_pct, rem_sleep_pct, morning_alarm_snoozes, next_day_fatigue_score, sleep_debt_category FROM raw.bedtime_screentime_sleep_debt USING SAMPLE 15 ROWS</parameter> <parameter name="purpose">Random sample of 15 rows, excluding the PII-flagged bedtime_phone_minutes and ingestion metadata columns</parameter> <parameter name="source">raw</parameter> </invoke> </tool_call> Wait — I must reply with a single JSON object. <invoke name="query_sql"> <parameter name="sql">SELECT user_id, age, gender, occupation_type, chronotype, primary_bedtime_app, screen_brightness_pct, blue_light_filter_active, caffeine_post_5pm_mg, physical_activity_min, sleep_latency_min, total_sleep_hours, deep_sleep_pct, rem_sleep_pct, morning_alarm_snoozes, next_day_fatigue_score, sleep_debt_category FROM raw.bedtime_screentime_sleep_debt USING SAMPLE 15 ROWS</parameter> <parameter name="purpose">Random sample of 15 rows</parameter> <parameter name="source">raw</parameter> </invoke>