If there is at least one image of one or more pelicans standing on a dock.
return pelicans ;return dock ;return #1 standing on #2 ;return images ;return the  number of  #3 for each  #4 ;return #4 where  #5 is at least one ;return the  number of  #6 ;return if  #7 is at least one
['select', 'select', 'filter', 'select', 'group', 'comparative', 'aggregate', 'boolean']