How many more clubs entered the FA Cup in the 2013-14 season compared to the 2005-06 season?
return clubs ;return #1 that entered the  FA Cup ;return #2 in  the  2013-14 season  ;return #2 in  the  2005-06 season  ;return number of  #3 ;return number of  #4 ;return difference of #5 and  #6
['select', 'filter', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']