{"created": {"type": "/type/datetime", "value": "2009-12-10T18:44:26.101805"}, "subject_places": ["United States"], "subjects": ["Coal", "Coal mines and mining", "Coal trade", "Energy development", "Energy policy", "Petroleum industry and trade"], "latest_revision": 5, "key": "/works/OL6198239W", "title": "The acceptable replacement of imported oil with coal", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1596443A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2012-11-28T11:17:00.698227"}, "revision": 5}