person1,0,2010-01-11 11:32:00
person2,0,2010-01-12 10:52:15
person2,3,2010-01-11 16:02:26
person3,0,2010-01-16 05:15:53
person4,4,2010-01-13 03:16:05
person5,6,2010-01-12 21:12:05
person6,8,2010-01-14 11:23:05
person7,10,2010-01-12 11:22:05
person8,4,2010-01-11 03:26:05
