{"type": {"key": "/type/work"}, "title": "Trial of steam fire-engines", "subjects": ["Fire engines", "Exhibitions", "Steam-engines", "Efficiency", "Chemical fire engines"], "subject_places": ["United States", "Canada"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL8734052A"}}], "key": "/works/OL32856192W", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2022-12-21T14:31:52.836587"}, "last_modified": {"type": "/type/datetime", "value": "2022-12-21T14:31:52.836587"}}