If there is a zebra facing away from the camera with it's backside facing the camera
return zebra ;return #1 that is facing away from  the  camera  ;return backside of #2 ;return #3 that is facing the  camera  ;return #2 that has #4 ;return number of  #5 ;return if  #6 is at least one
['select', 'filter', 'project', 'filter', 'filter', 'aggregate', 'boolean']