( And ( it ( ( is ( ( a ( significant cause ) ) ( of ( ( ( ( chronic ( lung disease ) ) ( -LRB- ( ( ( emphysema , ) ( chronic bronchitis ) ) -RRB- ) ) ) , ) ( an ( absolutely ( horrific illness ) ) ) ) ) ) ) . ) ) )
(ROOT (S (CC And) (NP (PRP it)) (VP (VBZ is) (NP (NP (DT a) (JJ significant) (NN cause)) (PP (IN of) (NP (NP (NP (JJ chronic) (NN lung) (NN disease)) (PRN (-LRB- -LRB-) (NP (NP (NN emphysema)) (, ,) (NP (JJ chronic) (NNS bronchitis))) (-RRB- -RRB-))) (, ,) (NP (DT an) (RB absolutely) (JJ horrific) (NN illness)))))) (. .)))
And it is a significant cause of chronic lung disease (emphysema, chronic bronchitis), an absolutely horrific illness.
(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))))))) (. .)))