Task: Question Generation
Input (English): #1 return Germany made a last attempt on the  Western Front 
#2 return President Roosevelt died and  was  succeeded by Harry S. Truman 
#3 return year of #1 
#4 return year of #2 
#5 return difference of #4 and  #3
Output (English): How many years passed from when Germany made a last attempt on the Western Front to when President Roosevelt died and was succeeded by Harry S. Truman