If there are two green acorns and green acorn tops still attach to each other
return acorns ;return #1 that are green ;return tops of #2 ;return #3 that are green ;return #2 that are still attach to  #4 ;return number of  #5 ;return if  #6 is equal to  two
['select', 'filter', 'project', 'filter', 'filter', 'aggregate', 'boolean']