How many more money are imports than exports in 1905?
return imports in  1905 ;return exports in  1905 ;return monies of #1 ;return monies of #2 ;return sum of #3 ;return sum of #4 ;return the  difference of #5 and  #6
['select', 'select', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']