What is the shape of the small green object behind the blue cube?
return the   blue cube ;return objects ;return #2 that  are small ;return #2 that  are green ;return #2 in both #3 and #4 ;return #5 that  are behind #1 ;return the   shape of #6
['select', 'select', 'filter', 'filter', 'intersection', 'filter', 'project']