If in one image there are books on a bookshelf locked up behind glass.
return books ;return bookshelf ;return glass ;return #1 on #2 ;return #4 that are locked up ;return #5 that are behind #3 ;return images of #6 ;return if  #7 is equal to  one
['select', 'select', 'select', 'filter', 'filter', 'filter', 'project', 'boolean']