If left and right images depict one elephant, which has tusks.
return elephants ;return tusks of  #1 ;return #1 that has #2 ;return left image ;return right image ;return #3 in  #4 ;return #3 in  #5 ;return number of #6 ;return number of #7 ;return If #8 is  equal to one ;return If #9 is  equal to one ;return If both  #10 and #11 are  true
['select', 'project', 'filter', 'select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']