```json { "action": "tool_call", "reasoning": "I have the row and column counts from step-0. Now I need to determine the time period coverage. The card shows temporal axes: raw.accounts.year_established (1979..2017), raw.sales_pipeline.engage_date (2016-10-20..2017-12-27), and raw.sales_pipeline.close_date (2017-03-01..2017-12-31). I'll query the actual min/max dates from these temporal columns to confirm the exact time period coverage.", "tool": "query_sql", "args": { "sql": "SELECT MIN(year_established) as earliest_year_established, MAX(year_established) as latest_year_established FROM raw.accounts UNION ALL SELECT MIN(YEAR(engage_date)), MAX(YEAR(engage_date)) FROM raw.sales_pipeline UNION ALL SELECT MIN(YEAR(close_date)), MAX(YEAR(close_date)) FROM raw.sales_pipeline", "purpose": "Get the exact time period coverage from the three temporal columns identified in the dataset card", "source": "raw" } } ```