Task: Question Decomposition
Input (English): question: How many months passed from the battle of Verdun started to when the Battle of the Somme started?
Output (English): #1 return the  battle of Verdun started  
#2 return the  Battle of the   Somme started  
#3 return month of #1 
#4 return month of #2 
#5 return the  difference of #4 and  #3