If in one image, a long gray pipe runs the length of the bookstore ceiling.
return pipe ;return #1 that is long ;return #2 that is gray ;return the  bookstore ;return ceiling of #4 ;return #3 that runs the  length of #5 ;return if  #6 is in  one image
['select', 'filter', 'filter', 'select', 'project', 'filter', 'boolean']