Task: Question Generation
Input (English): #1 return purple sphere 
#2 return purple sphere besides #1 
#3 return #1 that  is  next to #2 
#4 return material of #2 
#5 return material of #3 
#6 return is  #4 the same as #5
Output (English): There are two purple spheres next to each other; are they the same material?