If each image includes a warthog with its head facing the camera.
return images ;return number of #1 ;return warthogs ;return heads of  #3 ;return the  camera ;return #3 where #4 are  facing #5 ;return images of  #6 ;return number of #7 ;return if  #8 is  equal to #2
['select', 'aggregate', 'select', 'project', 'select', 'comparative', 'project', 'aggregate', 'boolean']