Task: Question Generation
Input (English): #1 return ball 
#2 return #1 that  is  left most  
#3 return cylinder 
#4 return #3 that  is  right most  
#5 return color of #2 
#6 return color of #4 
#7 return #5 , #6
Output (English): What color are the left most ball and the right most cylinder?