```json { "table_name": "tag_lineage_edges", "table_type_tags": [ {"tag": "dimension", "confidence": 0.90} ], "primary_type": "dimension", "insufficient_evidence": false, "entity": { "columns": ["id"], "unique_per_row": true }, "time_axis": { "columns": ["first_seen_at", "last_seen_at"], "kind": "event_time" }, "reasoning": "The entity id is unique per row (Uniqueness 1.000, RPUV 1.00). Each row describes a tag assignment edge in a catalog system — the composite (consumer, dataset_id, table_name, column_name, family, tag) defines what the row is about, and first_seen_at/last_seen_at record when this edge was observed, not when it changed. The timestamps are descriptive attributes of the edge's observation window, not an axis ordering state transitions. The row exists to catalog a relationship, not to record an action or state change. Dimension." } ```