What is the shape that is behind a green cube, but in front of a brown sphere?
return objects ;return green cube ;return brown sphere ;return #1 behind #2 ;return #1 in  front of #3 ;return #1 in  both #4 and  #5 ;return shape of #6
['select', 'select', 'select', 'filter', 'filter', 'intersection', 'project']