{
    "action": "final",
    "content": "The Iris dataset has **one categorical column** (Species), which contains **3 distinct values**.\n\nBased on the column metadata already inspected:\n\n- **Species** (VARCHAR): 3 distinct values (Iris-setosa, Iris-versicolor, Iris-virginica)\n\nThe other columns in the dataset are numeric measures (SepalLengthCm, SepalWidthCm, PetalLengthCm, PetalWidthCm) or system metadata fields (_ingestion_timestamp, _batch_id, _source_file, _source_system), not categorical dimensions.\n\nThe Id column, while having 150 distinct values, serves as a row identifier rather than a categorical grouping variable."
}