If one llama is not standing on four legs.
return llamas ;return legs of #1 ;return #2 that #1 are standing on ;return number of  #3 for each  #1 ;return #1 where  #4 is not equal to  four ;return number of  #5 ;return if  #6 is equal to  one
['select', 'project', 'filter', 'group', 'comparative', 'aggregate', 'boolean']