If one out of four graduates has her back turned towards the camera.
return graduates ;return back of #1 ;return #1 where  #2 is turned towards the  camera ;return number of  #1 ;return number of  #3 ;return if  #4 is equal to  four ;return if  #5 is equal to  one ;return if  both  #6 and #7 are true
['select', 'project', 'comparative', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']