```json { "table_name": "countries", "table_type_tags": [ {"tag": "dimension", "confidence": 0.95} ], "primary_type": "dimension", "insufficient_evidence": false, "entity": { "columns": ["country_id"], "unique_per_row": true }, "time_axis": null, "reasoning": "country_id has Uniqueness 1.000 (251 unique values in 251 rows), establishing each row as a unique country entity. name also has Uniqueness 1.000, confirming the one-row-per-country grain. The columns continent and has_brewer are descriptive attributes (RPUV 41.83 and 125.50 respectively). No time axis exists — _ingestion_timestamp is a provenance column (all 251 rows share the same value). This is a reference catalog of countries with their properties." } ```