```json { "action": "tool_call", "reasoning": "The user wants to see representative sample rows from the dataset. The dataset has 43 tables with over 2 million rows total. I should query the raw.samples table which appears to be designed for this purpose (10,118 rows). Let me first inspect its structure to understand what it contains.", "tool": "inspect_columns", "args": { "table": "samples" } } ```