the small ball behind the small green block is the same color as what other object?
return small  ball ;return small  block ;return #2 that is green ;return #1 behind #3 ;return objects besides  #4 ;return color of #4 ;return colors of #5 ;return #5 where #6 is the  same as #7
['select', 'select', 'filter', 'filter', 'discard', 'project', 'project', 'comparative']