{
    "action": "tool_call",
    "reasoning": "I need to determine the exact time period covered by the dataset. Since the Date column is a VARCHAR, I will query the distinct dates to understand the format and find the minimum and maximum dates.",
    "tool": "query_sql",
    "args": {
        "purpose": "Find the time period covered by the dataset",
        "source": "raw",
        "sql": "SELECT MIN(strptime(Date, '%d/%m/%Y')) as min_date, MAX(strptime(Date, '%d/%m/%Y')) as max_date FROM raw.table_tennis_sept2022"
    }
}