At 9:44, NORAD briefed the conference on the possible hijacking of Delta 1989.
( ( At 9:44 ) ( , ( NORAD ( ( ( briefed ( the conference ) ) ( on ( ( the ( possible hijacking ) ) ( of ( Delta 1989 ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (CD 9:44))) (, ,) (NP (NNP NORAD)) (VP (VBD briefed) (NP (DT the) (NN conference)) (PP (IN on) (NP (NP (DT the) (JJ possible) (NN hijacking)) (PP (IN of) (NP (NNP Delta) (CD 1989)))))) (. .)))
NORAD spoke to the conference concerning a possible hijacking of Delta 1989.
( NORAD ( ( spoke ( to ( ( the conference ) ( concerning ( ( a ( possible hijacking ) ) ( of ( Delta 1989 ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP NORAD)) (VP (VBD spoke) (PP (TO to) (NP (NP (DT the) (NN conference)) (PP (VBG concerning) (NP (NP (DT a) (JJ possible) (NN hijacking)) (PP (IN of) (NP (NNP Delta) (CD 1989)))))))) (. .)))