question: What is the color of the metallic object to the right of the object behind the blue sphere?
#1 return objects 
#2 return #1 that  are metallic 
#3 return #1 that  is  blue 
#4 return #3 that  is  sphere 
#5 return #1 behind #4 
#6 return #2 to  to the   right of #5 
#7 return color of #6