what is the shape of the item that is the same color as the item obstructing two spheres?
return items ;return #1 that  are obstructing two spheres ;return the   color of #2 ;return #1 besides #2 ;return the   colors of #4 ;return #4 where #5 is  the   same as #3 ;return the   shape of #6
['select', 'filter', 'project', 'discard', 'project', 'comparative', 'project']