```json { "table_name": "tag_lineage_edges", "table_type_tags": [ {"tag": "path", "confidence": 0.75}, {"tag": "state", "confidence": 0.30} ], "primary_type": "path", "insufficient_evidence": false, "entity": { "columns": ["dataset_id", "table_name", "column_name", "family", "tag"], "unique_per_row": false }, "time_axis": { "columns": ["first_seen_at", "last_seen_at"], "kind": "event_time" }, "reasoning": "The composite entity (dataset_id, table_name, column_name, family, tag) repeats across rows — id Uniqueness 1.000 but the natural grain is the tag assignment to a column. The time axis first_seen_at/last_seen_at (Uniqueness 0.024/0.025) tracks when each tag assignment was observed, and hit_count accumulates observations. Replaying rows in first_seen_at order reconstructs the evolving tag catalog state for each column: path. The rows also carry absolute observation windows, giving a secondary state reading." } ```