If the only animals shown are exactly two warthogs, in total.
return animals ;return warthogs ;return number of  #1 ;return number of  #2 ;return if  #4 is equal to  two ;return if  #3 is equal to  #4 ;return if  both  #6 and #5 are true
['select', 'select', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']