On 311 Day in 2006, how many more songs were supposed to be played that were not due to the strict curfew?
return 311 Day in  2006 ;return songs supposed to be played of #1 ;return songs that were played of #1 ;return number of  #2 ;return number of  #3 ;return the  difference of #4 and  #5
['select', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']