```json { "action": "tool_call", "reasoning": "The user wants a list of all columns with their data types and meanings. The dataset card shows raw.championsdataset has 12 columns, but only lists their names and VARCHAR types. I need to call inspect_columns to get detailed metadata including semantic roles and meanings for all columns.", "tool": "inspect_columns", "args": { "table": "championsdataset" } } ```