If there is at least one animal carrying another animal or part of another animal.
return animals ;return another animal  ;return part of #2 ;return #1 carrying #2 ;return #1 carrying #3 ;return #4 , #5 ;return number of  #6 ;return if  #7 is at least one
['select', 'select', 'project', 'filter', 'filter', 'union', 'aggregate', 'boolean']