Which event happened first, he boarded American Airlines Flight 63 or Reid pleaded guilty in U.S. federal court?
return Reid boarded American Airlines Flight 63 ;return Reid pleaded guilty in  U.S. federal court ;return when  was  #1 ;return when  was  #2 ;return which is the  lowest of #3 ,  #4
['select', 'select', 'project', 'project', 'comparison']