{
    "action": "tool_call",
    "reasoning": "I have the row and column counts from step-0, and I can see from step-2 that batches has temporal columns (started_at, completed_at). I need to find the overall time range across all temporal columns in the dataset. Let me query the batches table to get the time range, and also check if other tables have temporal data.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT MIN(started_at) as earliest_start, MAX(started_at) as latest_start, MIN(completed_at) as earliest_completion, MAX(completed_at) as latest_completion FROM raw.batches",
        "purpose": "Get the time range from batches table temporal columns",
        "source": "raw"
    }
}