Excluding Elam's first field goal, how many yards longer was the average of Elam's field goals than the average of Kasay's field goals?
return Elam  ;return Kasay ;return field goals of #1 ;return field goals of #2 ;return the  first of #3 ;return #3 besides  #5 ;return yards of #6 ;return yards of #4 ;return the  average of #7 ;return the  average of #8 ;return the  difference of #9 and  #10
['select', 'select', 'project', 'project', 'aggregate', 'discard', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']