How many more touchdowns from both teams were scored during the second half of the game compared to the first?
return touchdowns ;return #1 that were scored during the  first half ;return #1 that were scored during the  second half ;return number of  #2 ;return number of  #3 ;return difference of #5 and  #4
['select', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']