It sounds perfect, said Jon.
( ( It ( sounds perfect ) ) ( , ( ( said Jon ) . ) ) )
(ROOT (SINV (S (NP (PRP It)) (VP (VBZ sounds) (ADJP (JJ perfect)))) (, ,) (VP (VBD said)) (NP (NNP Jon)) (. .)))
Jon thought that the idea was perfectly sound.
( Jon ( ( thought ( that ( ( the idea ) ( was ( perfectly sound ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Jon)) (VP (VBD thought) (SBAR (IN that) (S (NP (DT the) (NN idea)) (VP (VBD was) (ADJP (RB perfectly) (JJ sound)))))) (. .)))