```json { "action": "tool_call", "reasoning": "The dataset card shows a gold table 'Iris_by_Species' which aggregates by Species, suggesting Species is a natural grouping. However, I should first check if there are other natural segments beyond the obvious Species classifier. I'll start by examining the column metadata to understand the semantic roles and distributions, then look at the Species breakdown to see if it forms distinct clusters.", "tool": "inspect_columns", "args": { "table": "Iris" } } ```