If there is a person sitting down on the ledge along the storefront window.
return person ;return ledge ;return storefront ;return window of #3 ;return #2 that is along #4 ;return #1 sitting down on #5 ;return the  number of  #6 ;return if  #7 is at least one
['select', 'select', 'select', 'project', 'filter', 'filter', 'aggregate', 'boolean']