If there are two pairs of warthogs standing with their faces touching.
return warthogs ;return #1 that are  standing ;return faces of  #2 ;return #2 where #3 are  touching ;return pairs of  #4 ;return number of #5 ;return if  #6 is  equal to two
['select', 'filter', 'project', 'comparative', 'project', 'aggregate', 'boolean']