If there are three brown and spotted hyenas  eat the carcass of a giraffe .
return hyenas ;return #1 that are  brown ;return #1 that are  spotted ;return #1 in  both  #2 and #3 ;return giraffe ;return carcass of  #5 ;return #4 that eat #6 ;return number of #7 ;return if  #8 is  equal to three
['select', 'filter', 'filter', 'intersection', 'select', 'project', 'filter', 'aggregate', 'boolean']