Between 8:25 and 8:32, in accordance with the FAA protocol, Boston Center managers started notifying their chain of command that American 11 had been hijacked.
( ( Between ( ( 8:25 and ) 8:32 ) ) ( , ( ( in ( accordance ( with ( the ( FAA protocol ) ) ) ) ) ( , ( ( Boston ( Center managers ) ) ( ( ( started ( notifying ( ( their chain ) ( of command ) ) ) ) ( that ( ( American 11 ) ( had ( been hijacked ) ) ) ) ) . ) ) ) ) ) )
(ROOT (S (PP (IN Between) (NP (CD 8:25) (CC and) (CD 8:32))) (, ,) (PP (IN in) (NP (NP (NN accordance)) (PP (IN with) (NP (DT the) (NNP FAA) (NN protocol))))) (, ,) (NP (NNP Boston) (NNP Center) (NNS managers)) (VP (VBD started) (S (VP (VBG notifying) (NP (NP (PRP$ their) (NN chain)) (PP (IN of) (NP (NN command)))))) (SBAR (IN that) (S (NP (NNP American) (CD 11)) (VP (VBD had) (VP (VBN been) (VP (VBN hijacked))))))) (. .)))
The American 11 flight was hijacked before 8:32.
( ( The ( American ( 11 flight ) ) ) ( ( was ( hijacked ( before 8:32 ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP American) (CD 11) (NN flight)) (VP (VBD was) (VP (VBN hijacked) (PP (IN before) (NP (CD 8:32))))) (. .)))