( today ( , ( ( ( more likely ) causes ) ( ( ( include ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( chronic pneumonia ) , ) ( cystic fibrosis ) ) , ) ( chronic bronchitis ) ) , ) emphysema ) , ) measles ) , ) silicosis ) , ) ( lung abscess ) ) , ) ( lung cancer ) ) , ) or ) ( a ( congenital defect ) ) ) ) ( in ( ( the ( immune system ) ) ( ( predisposing ( the airways ) ) ( to ( a ( chronic ( destructive infection ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (NP (NN today)) (, ,) (NP (ADJP (RBR more) (JJ likely)) (NNS causes)) (VP (VBP include) (NP (NP (JJ chronic) (NN pneumonia)) (, ,) (NP (JJ cystic) (NN fibrosis)) (, ,) (NP (JJ chronic) (NNS bronchitis)) (, ,) (NP (NN emphysema)) (, ,) (NP (NNS measles)) (, ,) (NP (NNS silicosis)) (, ,) (NP (NN lung) (NNS abscess)) (, ,) (NP (NN lung) (NN cancer)) (, ,) (CC or) (NP (DT a) (JJ congenital) (NN defect))) (PP (IN in) (NP (NP (DT the) (JJ immune) (NN system)) (VP (VBG predisposing) (NP (DT the) (NNS airways)) (PP (TO to) (NP (DT a) (JJ chronic) (JJ destructive) (NN infection))))))) (. .)))
today, more likely causes include chronic pneumonia, cystic fibrosis, chronic bronchitis, emphysema, measles, silicosis, lung abscess, lung cancer, or a congenital defect in the immune system predisposing the airways to a chronic destructive infection.
(ROOT (S (NP (NNP Pneumonia) (CC and) (NN emphysema) (NNS illnesses)) (VP (VBP are) (VP (VBN caused) (PP (IN by) (NP (NN damage))) (PP (TO to) (NP (NP (DT the) (NNS alveoli)) (PP (IN of) (NP (DT the) (NNS lungs))))))) (. .)))