question: How many more Germans were living in the city in 1941 compared to Romanians and Hungarians combined?
#1 return the  city 
#2 return Germans in  1941 of #1 
#3 return Romanians in  1941 of #1 
#4 return Hungarians in  1941 of #1 
#5 return number of  #2 
#6 return number of  #3 
#7 return number of  #4 
#8 return sum of #6 and  #7 
#9 return the  difference of #5 and  #8