If only one of the two leopards is asleep, and neither is showing its tongue.
return leopards ;return #1 that are  asleep ;return number of #2 ;return if  #3 is  equal to one ;return tongues of  #1 ;return #1 that are  showing #5 ;return number of #6 ;return if  #7 is  equal to zero ;return if  both  #4 and #8 are  true
['select', 'filter', 'aggregate', 'boolean', 'project', 'filter', 'aggregate', 'boolean', 'boolean']