If one image contains no more than 10 zebra, and the other image includes a mass of zebra too numerous to count, but no other large animals that are clearly visible.
return one image  ;return zebras in  #1 ;return number of  #2 ;return if  #3 is at most 10 ;return other image  ;return mass of zebra in  #5 ;return if  #6 is too numerous to  count ;return animals in  #5 ;return #8 that are large ;return #9 besides  #6 ;return number of  #10 ;return if  #11 is equal to  zero ;return if  both  #7 and #12 are true ;return if  both  #4 and #13 are true
['select', 'project', 'aggregate', 'boolean', 'select', 'project', 'boolean', 'project', 'filter', 'discard', 'aggregate', 'boolean', 'boolean', 'boolean']