( ( ( ( The ( railroad trestle ) ) and ) ( the ( highway bridge ) ) ) ( ( ( ( attract ( ( a ( small number ) ) ( of ( fishermen ( throughout ( the year ) ) ) ) ) ) , ) ( with ( activity ( ( increasing ( to ( ( ( approximately 20 ) persons ) ( per day ) ) ) ) ( on ( weekends ( during summer ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN railroad) (NN trestle)) (CC and) (NP (DT the) (NN highway) (NN bridge))) (VP (VBP attract) (NP (NP (DT a) (JJ small) (NN number)) (PP (IN of) (NP (NP (NNS fishermen)) (PP (IN throughout) (NP (DT the) (NN year)))))) (, ,) (PP (IN with) (NP (NP (NN activity)) (VP (VBG increasing) (PP (TO to) (NP (NP (QP (RB approximately) (CD 20)) (NNS persons)) (PP (IN per) (NP (NN day))))) (PP (IN on) (NP (NP (NNS weekends)) (PP (IN during) (NP (NN summer))))))))) (. .)))
The railroad trestle and the highway bridge attract a small number of fishermen throughout the year, with activity increasing to approximately 20 persons per day on weekends during summer.
(ROOT (S (NP (NP (DT A) (-LRB- -LRB-) (NN n) (-RRB- -RRB-) (NN increase)) (PP (IN in) (NP (NN length)))) (VP (VBZ happens) (PP (TO to) (NP (NN metal) (NN railroad) (NNS tracks))) (PP (IN during) (NP (NP (DT the) (NN heat)) (PP (IN of) (NP (DT a) (NN summer) (NN day)))))) (. .)))