( ( ( ( length -RRB- ) -RSB- ) -RRB- ) After )
(ROOT (VP (VB length) (-RRB- -RRB-) (NP (NNS -RSB-)) (-RRB- -RRB-) (PP (IN After))))
length)]) After
(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)))))) (. .)))