How many more touchdowns did the Vikings get than the Falcons in the first half?
return the  Vikings ;return touchdowns of #1 ;return #2 in  the  first half ;return number of  #3 ;return the  Falcons ;return touchdowns of #5 ;return #6 in  the  first half ;return number of  #7 ;return difference of #4 and  #8
['select', 'project', 'filter', 'aggregate', 'select', 'project', 'filter', 'aggregate', 'arithmetic']