How many more yards were completed in the third quarter than in the fourth quarter?
return the  third quarter ;return the  fourth quarter ;return completed yards of #1 ;return completed yards of #2 ;return sum of #3 ;return sum of #4 ;return the  difference of #5 and  #6
['select', 'select', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']