```json { "action": "tool_call", "reasoning": "I have the first 30 columns from inspect_columns, but the table has 48 columns total. The error message from step-2 actually revealed the complete list of valid columns. I now need to query all columns to get their complete metadata (types, roles, distinct counts) so I can classify them properly into identifiers, categorical dimensions, numeric metrics, and dates/times.", "tool": "inspect_columns", "args": { "table": "matches_1930_2022" } } ```