CREATE TABLE music_festival (Date_of_ceremony VARCHAR(255), Volume VARCHAR(255)); CREATE TABLE volume (Volume_ID VARCHAR(255), Weeks_on_Top INTEGER)
Please show the date of ceremony of the volumes that last more than 2 weeks on top.
    
SQL: SELECT T1.Date_of_ceremony FROM music_festival AS T1 JOIN volume AS T2 ON T1.Volume = T2.Volume_ID WHERE T2.Weeks_on_Top > 2