```json { "action": "tool_call", "reasoning": "The question asks for columns, data types, and meanings across the entire dataset. The dataset card shows 5 tables with columns listed, but the card note says 'description omitted'. I need to get detailed column metadata including descriptions/meanings. I'll start with the largest table (sales_pipeline, 8,800 rows) using inspect_columns to get full metadata including semantic roles and meanings, then continue with the other tables.", "tool": "inspect_columns", "args": { "table": "sales_pipeline" } } ```