```json { "action": "tool_call", "reasoning": "The dataset card shows raw.ai_supercomputers has 482 rows and 61 columns, with a temporal axis 'First Operational Date' ranging from 2010-11-15 to 2025-07-22. I'll verify these basic facts with a direct query to confirm the row count and extract the exact time range from the data.", "tool": "query_sql", "args": { "sql": "SELECT COUNT(*) as total_rows, MIN(\"First Operational Date\") as earliest_date, MAX(\"First Operational Date\") as latest_date FROM raw.ai_supercomputers", "purpose": "Confirm row count and determine the exact time period covered by the First Operational Date column", "source": "raw" } } ```