The cubes are the same color and material, the cylinders are the same color and material, are the spheres the same color and material?
return spheres ;return the    colors of #1 ;return the    materials of #1 ;return if  #2 are the    same  ;return if  #3 are the    same  ;return #4 and   #5
['select', 'project', 'project', 'boolean', 'boolean', 'union']