find me the earliest boston departure for atlanta and the lastest return trip from atlanta so that i can be in atlanta the longest amount of time but return to boston the same day 
return departures ;return #1 from  boston  ;return #2 to atlanta   ;return when  is #3 ;return #3 where #4 is lowest ;return return trips ;return #6 from  atlanta   ;return #7 to boston  ;return when  is #8 ;return #8 where #9 is highest ;return #5 ,  #10
['select', 'filter', 'filter', 'project', 'superlative', 'select', 'filter', 'filter', 'project', 'superlative', 'union']