If one sailboat is on the open water with its sails folded down.
return sailboat ;return open water ;return #1 on #2 ;return sails of #3 ;return #3 where  #4 is folded down ;return the  number of  #5 ;return if  #6 is equal to  one
['select', 'select', 'filter', 'project', 'comparative', 'aggregate', 'boolean']