are there more cubes behind the blue sphere or the silver one?
return the  blue sphere ;return the  silver sphere ;return cubes behind of #1 ;return cubes behind of #2 ;return number of  #3 ;return number of  #4 ;return which is more of #5 ,  #6
['select', 'select', 'project', 'project', 'aggregate', 'aggregate', 'comparison']