What color is the sphere behind the blue cube and left of the gray cube?
return the   blue cube ;return the   gray cube ;return the   sphere ;return #3 that  is  behind #1 ;return #3 that  is  to  the   left of #2 ;return #3 in both #4 and #5 ;return the   color of #6
['select', 'select', 'select', 'filter', 'filter', 'intersection', 'project']