( It ( ( can ( cause ( ( ( ( ( ( lung cancer ) , ) emphysema ) , ) and ) ( heart diseases ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (MD can) (VP (VB cause) (NP (NP (NN lung) (NN cancer)) (, ,) (NP (NN emphysema)) (, ,) (CC and) (NP (NN heart) (NNS diseases))))) (. .)))
It can cause lung cancer, emphysema, and heart diseases.
(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))))))) (. .)))