How many yards longer was San Diego's first field goal than the Dolphin's first field goal?
return San Diego ;return the  Dolphin ;return field goals of #1 ;return field goals of #2 ;return first of #3 ;return first of #4 ;return yards of #5 ;return yards of #6 ;return difference #7 and  #8
['select', 'select', 'project', 'project', 'aggregate', 'aggregate', 'project', 'project', 'arithmetic']