{"created": {"type": "/type/datetime", "value": "2009-12-10T09:40:10.621272"}, "subject_places": ["United States"], "subjects": ["Four-color problem", "Geometry", "Mathematics", "Problems, exercises", "Study and teaching (Secondary)"], "latest_revision": 2, "key": "/works/OL5353928W", "title": "The mathematician's coloring book", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1232355A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2010-12-03T20:11:20.612167"}, "revision": 2}