How many more interceptions did McNabb throw compared to A.J. Feeley?
return McNabb ;return interceptions of #1 ;return number of  #2 ;return A.J Feeley ;return interceptions of #4 ;return number of  #5 ;return difference of #3 and  #6
['select', 'project', 'aggregate', 'select', 'project', 'aggregate', 'arithmetic']