What is the color of the object that is behind the brown ball and in front of the green cube?
return ball ;return #1 that  is  brown ;return cube ;return #3 that  is  green ;return object ;return #5 that  is  behind #2 ;return #5 that  is  in front of #4 ;return #5 in both #6 and #7 ;return color of #8
['select', 'filter', 'select', 'filter', 'select', 'filter', 'filter', 'intersection', 'project']