Task: Question Generation
Input (English): #1 return the   metallic thing 
#2 return the   cube 
#3 return objects 
#4 return #3 that  are behind #1 
#5 return #3 that  are in front of #2 
#6 return #3 in both #4 and #5 
#7 return the   shape of #6
Output (English): What shape is the object behind the metallic thing and in front of the cube?