While traveling 35,000 feet above eastern Ohio, United 93 suddenly dropped 700 feet.
( ( While ( traveling ( ( 35,000 feet ) ( above ( eastern Ohio ) ) ) ) ) ( , ( ( United 93 ) ( suddenly ( ( dropped ( 700 feet ) ) . ) ) ) ) )
(ROOT (S (SBAR (IN While) (S (VP (VBG traveling) (NP (NP (CD 35,000) (NNS feet)) (PP (IN above) (NP (JJ eastern) (NNP Ohio))))))) (, ,) (NP (NNP United) (CD 93)) (ADVP (RB suddenly)) (VP (VBD dropped) (NP (CD 700) (NNS feet))) (. .)))
There was a decrease of 700 feet in the altitude of the plane.
( There ( ( was ( ( a decrease ) ( of ( ( 700 feet ) ( in ( ( the altitude ) ( of ( the plane ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBD was) (NP (NP (DT a) (NN decrease)) (PP (IN of) (NP (NP (CD 700) (NNS feet)) (PP (IN in) (NP (NP (DT the) (NN altitude)) (PP (IN of) (NP (DT the) (NN plane))))))))) (. .)))