```json { "action": "tool_call", "reasoning": "The dataset card shows raw.ai_job_dataset has 23 columns. To classify them properly (identifiers, categorical dimensions, numeric metrics, dates/times), I need detailed metadata including semantic_role, rough_kind, and phys_type for all columns. I'll use inspect_columns without specifying columns to get the first 30 (which covers all 23).", "tool": "inspect_columns", "args": { "table": "ai_job_dataset" } } ```