question: What color is the cylinder behind the yellow ball and next to the large purple square?
#1 return cylinders 
#2 return balls 
#3 return yellow of #2 
#4 return #1 that  is  behind #3 
#5 return squares 
#6 return purple of #5 
#7 return #4 that  is  next to #6 
#8 return color of #7