Task: Question Generation
Input (English): #1 return cube 
#2 return #1 that  is  blue 
#3 return material of #2 
#4 return sphere 
#5 return #4 that  is  purple 
#6 return material of #5 
#7 return if  #3 is  same as #6
Output (English): is the blue cube the same material as the purple sphere?