How many yards longer was Garrard's longest TD pass over Roethlisberger's longest one?
return Garrard ;return Roethlisberger ;return TD passes of #1 ;return TD passes of #2 ;return yards of #3 ;return yards of #4 ;return the  longest of #5 ;return the  longest of #6 ;return the  difference of #7 and  #8
['select', 'select', 'project', 'project', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']