date,start time,end time,kind,rooms
2013-12-12,09:00,11:30,plenary,room a
,12:30,14:00,talk,room a; room b; room c; room d
,14:00,15:00,talk,room a; room b; room c; room d
,10:00,13:00,tutorial,room e
2013-12-13,09:00,10:10:00,plenary,room a
,11:00,12:00:00,talk,room a; room b; room c; room d
,14:00,15:15:00,talk,room a; room b; room c; room d
,14:00,15:15:00,tutorial,room e
2013-12-13,12:00:00,13:00,lunch,
,15:00,15:30,afternoon tea,
,15:00,16:00,tutorial,room d