Task: Question Generation
Input (English): #1 return things 
#2 return #1 that  is  green 
#3 return #2 that  is  small 
#4 return #1 that  is  purple 
#5 return #4 that  is  large 
#6 return material of #3 
#7 return material of #5 
#8 return is  #6 equal to #7
Output (English): Do the small green thing and the large purple thing have the same material?