If at least one big-eared bulldog is standing on all fours on green grass, facing toward the camera.
return bulldogs ;return #1 that are big-eared ;return all fours of #2 ;return #2 standing on #3 ;return grass ;return #5 that is green ;return #4 on #6 ;return #7 that are facing toward the  camera ;return number of  #8 ;return if  #9 is at least one
['select', 'filter', 'project', 'filter', 'select', 'filter', 'filter', 'filter', 'aggregate', 'boolean']