{"last_modified": {"type": "/type/datetime", "value": "2019-03-10T11:56:59.280724"}, "title": "100 Jahre Wasserwirtschaft im Revier", "created": {"type": "/type/datetime", "value": "2009-12-10T07:20:49.648470"}, "covers": [8421872], "subject_places": ["Germany", "Ruhr (Region)"], "subjects": ["Emschergenossenschaft", "History", "Water-supply"], "latest_revision": 3, "key": "/works/OL4735822W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL986502A"}}], "subject_times": ["19th century", "20th century"], "type": {"key": "/type/work"}, "revision": 3}