```json { "action": "tool_call", "reasoning": "To understand exactly what a single row represents, I will query a small sample of the data. This will show the grain of the dataset (e.g., one row per medal won by a country/athlete in a specific event and year).", "tool": "query_sql", "args": { "sql": "SELECT year, event, medal, country, medalist, event_type, gender FROM raw.olympic_table_tennis_medals_1988_2024 LIMIT 5;", "purpose": "Sample rows to determine the grain of the dataset", "source": "raw" } } ```