'So I assume he hacked into the autopilot and reprogrammed it to-'
( ` ( ( So I ) ( ( assume ( he ( ( ( hacked ( into ( the autopilot ) ) ) and ) ( ( reprogrammed it ) ( to - ) ) ) ) ) ' ) ) )
(ROOT (S (`` `) (NP (RB So) (PRP I)) (VP (VBP assume) (SBAR (S (NP (PRP he)) (VP (VP (VBD hacked) (PP (IN into) (NP (DT the) (NN autopilot)))) (CC and) (VP (VBD reprogrammed) (NP (PRP it)) (PP (TO to) (NP (NNP -)))))))) ('' ')))
I'm assuming he hacked the autopilot to bring the plane down.
( I ( ( 'm ( assuming ( he ( hacked ( the ( autopilot ( to ( ( bring ( the plane ) ) down ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP 'm) (VP (VBG assuming) (SBAR (S (NP (PRP he)) (VP (VBD hacked) (NP (DT the) (NN autopilot) (S (VP (TO to) (VP (VB bring) (NP (DT the) (NN plane)) (PRT (RP down))))))))))) (. .)))