Task: Question Generation
Input (English): #1 return blocks 
#2 return #1 that  are large 
#3 return #2 that  are silver 
#4 return cylinders 
#5 return #4 that  are small 
#6 return #5 that  are behind #3 
#7 return number of  #6
Output (English): How many small cylinders are behind the large silver block?