Title IV of the Clean Air Act (relating to acid deposition control)
( ( Title IV ) ( of ( ( the ( Clean ( Air Act ) ) ) ( -LRB- ( ( relating ( to ( acid ( deposition control ) ) ) ) -RRB- ) ) ) ) )
(ROOT (NP (NP (NNP Title) (NNP IV)) (PP (IN of) (NP (NP (DT the) (NNP Clean) (NNP Air) (NNP Act)) (PRN (-LRB- -LRB-) (VP (VBG relating) (PP (TO to) (NP (JJ acid) (NN deposition) (NN control)))) (-RRB- -RRB-))))))
The fourth title in the CAA related to acid deposition. 
( ( ( The ( fourth title ) ) ( in ( the CAA ) ) ) ( ( related ( to ( acid deposition ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ fourth) (NN title)) (PP (IN in) (NP (DT the) (NNP CAA)))) (VP (VBN related) (PP (TO to) (NP (JJ acid) (NN deposition)))) (. .)))