If an image shows a stairwell enclosed by glass panels without a top rail or hinges.
return stairwells ;return glass panels ;return #1 enclosed by #2 ;return #3 with  top rails ;return #3 with hinges ;return #3 besides  #4 ;return #6 besides  #5 ;return if  #7 is in  an image
['select', 'select', 'filter', 'filter', 'filter', 'discard', 'discard', 'boolean']