```json { "action": "tool_call", "reasoning": "The dataset card shows 14 columns in raw.olympic_table_tennis_medals_1988_2024. To classify them properly (identifiers, categorical dimensions, numeric metrics, dates/times), I need detailed metadata including semantic roles, types, and cardinality. I'll use inspect_columns to get this information for all columns in the table.", "tool": "inspect_columns", "args": { "table": "raw.olympic_table_tennis_medals_1988_2024" } } ```