Beginning at 8:52, the controller made repeated attempts to reach the crew of United 175.
( ( Beginning ( at 8:52 ) ) ( , ( ( the controller ) ( ( ( made ( repeated attempts ) ) ( to ( reach ( ( the crew ) ( of ( United 175 ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (VBG Beginning) (PP (IN at) (NP (CD 8:52)))) (, ,) (NP (DT the) (NN controller)) (VP (VBD made) (NP (VBN repeated) (NNS attempts)) (S (VP (TO to) (VP (VB reach) (NP (NP (DT the) (NN crew)) (PP (IN of) (NP (NNP United) (CD 175)))))))) (. .)))
The controller didn't want to contact the crew of United 175.
( ( The controller ) ( ( ( did n't ) ( want ( to ( contact ( ( the crew ) ( of ( United 175 ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN controller)) (VP (VBD did) (RB n't) (VP (VB want) (S (VP (TO to) (VP (VB contact) (NP (NP (DT the) (NN crew)) (PP (IN of) (NP (NNP United) (CD 175))))))))) (. .)))