16. { "_id" : ObjectId("4dcd3ebc9278000000005158"), "timestamp" : ISODate("2011-05-13T14:22:46.777Z"), "binary" : BinData(0,""), "string" : "abc", "number" : 3, "subobj" : {"subA": 1, "subB": 2 }, "array" : [1, 2, 3], "dbref" : [_id1, _id2, _id3] } 17. { "_id" : ObjectId("4dcd3ebc9278000000005158"), "timestamp" : ISODate("2011-05-13T14:22:46.777Z"), "binary" : BinData(0,""), "string" : "abc", "num
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