How many more is Carpenter's 50 yard compared to Nick Folk's 30 yard?
return Carpenter ;return Nick Folk ;return yards of #1 ;return yards of #2 ;return #3 that are 50 yards ;return #4 that are 30 yards ;return the  difference of #5 and  #6
['select', 'select', 'project', 'project', 'filter', 'filter', 'arithmetic']