when did the first and second world war started and end?
return the  first world war started ;return the  first world war end ;return the  second world war started ;return the  second world war end ;return date of #1 ;return date of #2 ;return date of #3 ;return date of #4 ;return #5 , #6 ,   #7 ,  #8
['select', 'select', 'select', 'select', 'project', 'project', 'project', 'project', 'union']