```json { "action": "tool_call", "reasoning": "The question asks for columns, their data types, and meanings. The dataset card shows raw.callyeah_analytics_2026_07_23 has 14 columns with VARCHAR types listed, but I need detailed metadata including semantic roles and descriptions to explain what each column means. I'll use inspect_columns to get this information.", "tool": "inspect_columns", "args": { "table": "callyeah_analytics_2026_07_23" } } ```