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Dec 14, 2011 at 8:47 answer added Sándor Kovács timeline score: 4
Dec 14, 2011 at 6:38 vote accept tonywang
Dec 14, 2011 at 5:21 answer added ykm timeline score: 8
Dec 14, 2011 at 4:22 history asked tonywang CC BY-SA 3.0