At 8:34, the Boston Center controller received a third transmission from American 11:
( ( At 8:34 ) ( , ( ( the ( Boston ( Center controller ) ) ) ( ( ( received ( a ( third transmission ) ) ) ( from ( American 11 ) ) ) : ) ) ) )
(ROOT (S (PP (IN At) (NP (CD 8:34))) (, ,) (NP (DT the) (NNP Boston) (NNP Center) (NN controller)) (VP (VBD received) (NP (DT a) (JJ third) (NN transmission)) (PP (IN from) (NP (NNP American) (CD 11)))) (: :)))
The Boston Center controller got a third transmission from American 11 that said the plane was crashing right then.
( ( The ( Boston ( Center controller ) ) ) ( ( got ( ( ( a ( third transmission ) ) ( from ( American 11 ) ) ) ( that ( said ( ( the plane ) ( was ( crashing ( right then ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Boston) (NNP Center) (NN controller)) (VP (VBD got) (NP (NP (DT a) (JJ third) (NN transmission)) (PP (IN from) (NP (NNP American) (CD 11))) (SBAR (WHNP (WDT that)) (S (VP (VBD said) (SBAR (S (NP (DT the) (NN plane)) (VP (VBD was) (VP (VBG crashing) (ADVP (RB right) (RB then))))))))))) (. .)))