How many more Germans were living in the city in 1941 compared to Romanians and Hungarians combined?
return the  city ;return Germans in  1941 of #1 ;return Romanians in  1941 of #1 ;return Hungarians in  1941 of #1 ;return number of  #2 ;return number of  #3 ;return number of  #4 ;return sum of #6 and  #7 ;return the  difference of #5 and  #8
['select', 'project', 'project', 'project', 'aggregate', 'aggregate', 'aggregate', 'arithmetic', 'arithmetic']