Is the cylinder in the back the same material as the sphere in front of it?
return cylinders ;return spheres ;return #1 in  the   back ;return #2 in  front of #3 ;return the   material of #3 ;return the   material of #4 ;return is  #5 the   same as #6
['select', 'select', 'filter', 'filter', 'project', 'project', 'boolean']