How many more Buick vehicles were produced in 1906 than in 1905?
return 1906 ;return 1905 ;return Buick vehicles produced of #1 ;return Buick vehicles produced of #2 ;return number of  #3 ;return number of  #4 ;return the  difference of #5 and  #6
['select', 'select', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']