While this was being discussed by executives at FAA headquarters, the Command Center ordered one at 9:25.
( ( While ( this ( was ( being ( discussed ( by ( executives ( at ( FAA headquarters ) ) ) ) ) ) ) ) ) ( , ( ( the ( Command Center ) ) ( ( ( ordered one ) ( at 9:25 ) ) . ) ) ) )
(ROOT (S (SBAR (IN While) (S (NP (DT this)) (VP (VBD was) (VP (VBG being) (VP (VBN discussed) (PP (IN by) (NP (NP (NNS executives)) (PP (IN at) (NP (NNP FAA) (NNS headquarters)))))))))) (, ,) (NP (DT the) (NNP Command) (NNP Center)) (VP (VBD ordered) (NP (CD one)) (PP (IN at) (NP (CD 9:25)))) (. .)))
The Command Center ordered one after nine o'clock.
( ( The ( Command Center ) ) ( ( ( ordered one ) ( after ( nine o'clock ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Command) (NNP Center)) (VP (VBD ordered) (NP (CD one)) (PP (IN after) (NP (CD nine) (RB o'clock)))) (. .)))