If a body of water is visible below a sky full of birds in at least one image.
return water ;return body of #1 ;return sky ;return birds ;return #3 full of #4 ;return #2 visible below #5 ;return images of #6 ;return the  number of  #7 ;return if  #8 is at least one
['select', 'project', 'select', 'select', 'filter', 'filter', 'project', 'aggregate', 'boolean']