How many yards difference was Suisham’s last field goal compared to Gould’s last field goal?
return Suisham ;return field goals of #1 ;return last  of #2 ;return yards of #3 ;return Gould ;return field goals of #5 ;return last  of #6 ;return yards of #7 ;return difference of #4 and  #8
['select', 'project', 'aggregate', 'project', 'select', 'project', 'aggregate', 'project', 'arithmetic']