Between 1750 and 1900, how many residents did Weimar gain?
return Weimar ;return residents of #1 ;return #2 in  1750 ;return #2 in  1900 ;return number of  #3 ;return number of  #4 ;return difference of #6 and  #5
['select', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']