How many yards longer was Bironas' first half field goal than Prater's first half field goal?
return Bironas ;return Prater ;return field goals of #1 ;return field goals of #2 ;return #3 in  the  first half ;return #4 in  the  first half  ;return yards of #5 ;return yards of #6 ;return the  difference of #7 and  #8
['select', 'select', 'project', 'project', 'filter', 'filter', 'project', 'project', 'arithmetic']