{"public_id": "e1939702-8aca-4acd-94bd-c372ef2cdcc8", "provider": "official", "external_id": "county-fill:office:MA-25017-register-of-deeds-south-at-cambridge", "source_url": "https://en.wikipedia.org/wiki/Middlesex_County,_Massachusetts", "source_name": "Wikipedia: Middlesex County, Massachusetts (Government section)", "fetched_at": "2026-10-05T19:51:22+00:00"}