If all parrots have green body feathers and red beaks.
return parrots ;return body feathers of #1 ;return #1 where  #2 are green ;return beak of #3 ;return #3 where  #4 is red ;return number of  #5 ;return number of  #1 ;return if  #6 is equal to  #7
['select', 'project', 'comparative', 'project', 'comparative', 'aggregate', 'aggregate', 'boolean']