( ( ( The ( pulmonary component ) ) ( of ( the ( second ( heart sound ) ) ) ) ) ( ( becomes loud ) . ) )
(ROOT (S (NP (NP (DT The) (JJ pulmonary) (NN component)) (PP (IN of) (NP (DT the) (JJ second) (NN heart) (NN sound)))) (VP (VBZ becomes) (ADJP (JJ loud))) (. .)))
The pulmonary component of the second heart sound becomes loud.
(ROOT (S (S (VP (VBN Amplified))) (, ,) (NP (PRP it)) (VP (VBZ becomes) (SBAR (S (NP (NNP louder)) (VP (VBZ happens) (VP (VB do) (NP (DT the) (NN sound)) (PP (IN during) (NP (DT a) (NN resonance)))))))) (. .)))