Task: Question Generation
Input (English): #1 return Roskilde 
#2 return people of #1 
#3 return #2 in  1753 
#4 return #2 in  1536 
#5 return the  number of  #3 
#6 return the  number of  #4 
#7 return the  difference of #6 and  #5
Output (English): How many fewer people did Roskilde have in 1753 than in 1536?