There is one object on the left and right of the purple sphere; what shape are they?
return sphere ;return #1 that  is  purple ;return object on the  left of #2 ;return object on the  right of #2 ;return shape of #3 ;return shape of #4 ;return #5 ,  #6
['select', 'filter', 'project', 'project', 'project', 'project', 'union']