If a brown horse pulls a small carriage with 2 people on it
return horse ;return #1 that is brown ;return carriage ;return #3 that is small ;return people ;return #5 on #4 ;return number of  #6 for each  #4 ;return #4 where  #7 is equal to  two ;return if  #2 pulls #8
['select', 'filter', 'select', 'filter', 'select', 'filter', 'group', 'comparative', 'boolean']