```json { "action": "tool_call", "reasoning": "The dataset card shows raw.Iris has 10 columns. I need detailed metadata for all of them to classify each as identifier, categorical dimension, numeric metric, or date/time. The inspect_columns tool will give me the semantic_role, phys_type, and rough_kind for each column, which is exactly what I need to make this classification.", "tool": "inspect_columns", "args": { "table": "Iris" } } ```