She didn't listen.
( She ( ( ( did n't ) listen ) . ) )
(ROOT (S (NP (PRP She)) (VP (VBD did) (RB n't) (VP (VB listen))) (. .)))
She did not listen to the noise.
( She ( ( ( did not ) ( listen ( to ( the noise ) ) ) ) . ) )
(ROOT (S (NP (PRP She)) (VP (VBD did) (RB not) (VP (VB listen) (PP (TO to) (NP (DT the) (NN noise))))) (. .)))