Task: Question Generation
Input (English): #1 return the  Marines 
#2 return the  light tactical vehicle fleet of #1 
#3 return #2 in  2017 
#4 return #3 that will consist of the  A2 series 
#5 return number of  #3 
#6 return number of  #4 
#7 return the  difference of #5 and  #6
Output (English): How many of the Marines light tactical vehicle fleet by 2017 will not consist of the A2 series?