{
    "action": "tool_call",
    "reasoning": "I need to find the exact time period covered by the dataset by checking the minimum and maximum values of the _ingestion_timestamp column, as well as confirming the row count.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) as total_rows, MIN(_ingestion_timestamp) as min_timestamp, MAX(_ingestion_timestamp) as max_timestamp FROM raw.bedtime_screentime_sleep_debt;",
        "purpose": "Find row count and time period covered by the dataset",
        "source": "raw"
    }
}