What is the shape of the matte gray object besides the green metallic cube?
return cube ;return #1 that  is  green ;return #2 that  is  metallic ;return object ;return #4 that  is  matte ;return #5 that  is  gray ;return #6 besides #3 ;return shape of #7
['select', 'filter', 'filter', 'select', 'filter', 'filter', 'discard', 'project']