How many less Finnish staff  were imprisoned for 10-15 than  one month to five years?
return Finnish staff ;return #1 imprisoned for 10-15 ;return #1 imprisoned for one month to five years ;return number of  #2 ;return number of  #3 ;return difference of #4 and  #5
['select', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']