```json { "action": "tool_call", "reasoning": "The question asks for columns, their data types, and meanings across the dataset. The card says 'COLUMN OWNERSHIP: not listed here (97 columns across 2 tables exceeds the card budget) — call inspect_columns(<table>) to get a table's exact columns'. I need to inspect both tables to get their columns, types, and semantic meanings. I'll start with raw.adsl.", "tool": "inspect_columns", "args": { "table": "raw.adsl" } } ```