The Hijacking of American 77 American Airlines Flight 77 was scheduled to depart from Washington Dulles for Los Angeles at 8:10.
( ( ( The Hijacking ) ( of ( American ( 77 ( American ( Airlines ( Flight 77 ) ) ) ) ) ) ) ( ( was ( scheduled ( to ( depart ( from ( ( Washington Dulles ) ( for ( ( Los Angeles ) ( at 8:10 ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN Hijacking)) (PP (IN of) (NP (NNP American) (CD 77) (NNP American) (NNP Airlines) (NNP Flight) (CD 77)))) (VP (VBD was) (VP (VBN scheduled) (S (VP (TO to) (VP (VB depart) (PP (IN from) (NP (NP (NNP Washington) (NNP Dulles)) (PP (IN for) (NP (NP (NNP Los) (NNP Angeles)) (PP (IN at) (NP (CD 8:10)))))))))))) (. .)))
The plane was supposed to be heading to Los Angeles.
( ( The plane ) ( ( was ( supposed ( to ( be ( heading ( to ( Los Angeles ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN plane)) (VP (VBD was) (VP (VBN supposed) (S (VP (TO to) (VP (VB be) (VP (VBG heading) (PP (TO to) (NP (NNP Los) (NNP Angeles))))))))) (. .)))