How many is the difference in the number of yards of the first TD run by Jacobs and the yards of the second field goal made by Carney?
return Jacobs ;return TD runs of   #1 ;return first of   #2 ;return yards  of   #3 ;return Carney ;return field goals of   #5 ;return second of   #6 ;return yards  of   #7 ;return difference of   #4 and  #8
['select', 'project', 'aggregate', 'project', 'select', 'project', 'project', 'project', 'arithmetic']