{"title": "Berlin \u00fcber und unter der Erde", "subject_places": ["Germany", "Berlin", "Berlin (Germany)"], "subjects": ["Buildings, structures", "Buildings", "Berliner U-Bahn", "Exhibitions", "Architecture", "History", "OUR Brockhaus selection", "Architects", "Subway stations", "City planning"], "subject_people": ["Alfred Grenander (1863-1931)"], "key": "/works/OL18586174W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL239223A"}}], "subject_times": ["20th century", "19th century"], "type": {"key": "/type/work"}, "latest_revision": 5, "revision": 5, "created": {"type": "/type/datetime", "value": "2019-02-09T06:42:07.956796"}, "last_modified": {"type": "/type/datetime", "value": "2025-11-30T19:39:23.863272"}}