```json { "table_name": "columns_catalog", "table_type_tags": [ {"tag": "dimension", "confidence": 0.95} ], "primary_type": "dimension", "insufficient_evidence": false, "entity": { "columns": ["id"], "unique_per_row": true }, "time_axis": null, "reasoning": "The entity is id with Uniqueness 1.000 (RPUV 1.00), making each row unique. The table catalogs column metadata — each row describes one column from a table in the dataset (tables_catalog_id RPUV 79.28 references the sibling tables_catalog). The timestamps (_ingestion_timestamp, _batch_id) are provenance columns and ignored. No event timestamp or sequence axis exists; column_name, ordinal, arrow_type, semantic_role, and statistics (null_count, distinct_count, min_value, max_value) are all descriptive attributes of each cataloged column. This is a reference catalog of columns → dimension." } ```