{"first_sentence": {"type": "/type/text", "value": "European colonists or their ancestors living in America in the mid-1700s had come to the \"New World\" for many reasons: religious and political freedom, inexpensive land, and the potential for a better economic future."}, "physical_format": "Paperback", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "weight": "6.4 ounces", "languages": [{"key": "/l/eng"}], "publishers": ["Teaching Resources"], "number_of_pages": 72, "isbn_13": ["9780590315005"], "id": 12574360, "edition_name": "Teacher edition", "isbn_10": ["0590315005"], "publish_date": "April 2003", "key": "/b/OL9319507M", "authors": [{"key": "/a/OL3235249A"}], "title": "The American Revolution (History Comes Alive Teaching Unit, Grades 4-8)", "type": {"key": "/type/edition"}, "subjects": ["Elementary", "Teaching Methods & Materials - Social Science", "Education / Teaching Methods & Materials / General", "Teaching Methods & Materials - General", "Education / Teaching", "Education"], "physical_dimensions": "10.7 x 8.2 x 0.3 inches", "revision": 1}