Task: Question Decomposition
Input (English): question: Buy how many people did the population of The Gambia increase from 1963 to 2013?
Output (English): #1 return the  Gambia 
#2 return population of #1 
#3 return #2 in  1963 
#4 return #2 in  2013 
#5 return difference of #4 and  #3