At least some FAA officials in Boston Center and the New England Region knew that a hijacker on board American 11 had said we have some planes.
( ( ( ( ( At least ) some ) ( FAA officials ) ) ( in ( ( ( Boston Center ) and ) ( the ( New ( England Region ) ) ) ) ) ) ( ( knew ( that ( ( ( a hijacker ) ( on ( board ( American 11 ) ) ) ) ( had ( said ( we ( have ( some planes ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (QP (IN At) (JJS least) (DT some)) (NNP FAA) (NNS officials)) (PP (IN in) (NP (NP (NNP Boston) (NNP Center)) (CC and) (NP (DT the) (NNP New) (NNP England) (NNP Region))))) (VP (VBD knew) (SBAR (IN that) (S (NP (NP (DT a) (NN hijacker)) (PP (IN on) (NP (NN board) (NNP American) (CD 11)))) (VP (VBD had) (VP (VBD said) (SBAR (S (NP (PRP we)) (VP (VBP have) (NP (DT some) (NNS planes)))))))))) (. .)))
The FAA officials claim they heard specific demands and phone calls from the plane.
( ( The ( FAA officials ) ) ( ( claim ( they ( ( heard ( specific ( demands ( and ( phone calls ) ) ) ) ) ( from ( the plane ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP FAA) (NNS officials)) (VP (VBP claim) (SBAR (S (NP (PRP they)) (VP (VBD heard) (NP (JJ specific) (NNS demands) (CC and) (NN phone) (NNS calls)) (PP (IN from) (NP (DT the) (NN plane))))))) (. .)))