What is the shape of the small item that is made of the same material as the purple sphere?
return sphere ;return #1 that is  purple ;return items ;return #3 that are small ;return materials of #4 ;return material of #2 ;return #4 where #5 are the   same as #6 ;return shape of #7
['select', 'filter', 'select', 'filter', 'project', 'project', 'comparative', 'project']