How many more yards did Brady gain from Tate than Hernandez?
return Brady ;return yards of #1 ;return #2 from  Tate ;return #2 from  Hernandez ;return sum of #3 ;return sum of #4 ;return difference of #5 and  #6
['select', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']