question: What color is the object that is the same size and material as the purple object?
#1 return objects 
#2 return colors of #1 
#3 return #1 where #2 is  purple 
#4 return #1 besides  #3 
#5 return size of #3 
#6 return sizes of #4 
#7 return material of #3 
#8 return materials of #4 
#9 return #4 where #6 are the   same as #5 
#10 return #4 where #8 are the   same as #7 
#11 return #4 in both #9 and  #10 
#12 return color of #11