```json { "names": [ { "relation": "fd_fact_e7f3a116605b", "decision": "name", "name": "olist_sellers_dataset", "confidence": 0.95, "reason_code": "source_table_grain", "rationale": "The fact table preserves the source grain: one row per seller with their state and zip code prefix. It retains the source table's name." }, { "relation": "fd_dim_71b729c5dfc9", "decision": "name", "name": "seller_zip_code_prefixes", "confidence": 0.88, "reason_code": "key_is_the_entity", "rationale": "One row per zip code prefix, keyed on that prefix itself. The city column describes the zip code prefix, not a separate entity. The key is the catalogued item." } ] } ```