How many more people lived in Tooserkan county compared to Asadabad county?
return people ;return #1 that lived in  Tooserkan county  ;return #1 that lived in  Asadabad county  ;return number of  #2 ;return number of  #3 ;return difference of #4 and  #5
['select', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']