( This ( , ( ( along ( with ( its ( lengthened duration ) ) ) ) ( , ( ( ( is not ) ( ( ( found ( ( ( in ( ( anything else ) ( besides ( the fast ) ) ) ) , ) especially ) ) ( in ( ( the days ) ( of summer ) ) ) ) ( due ( to ( ( their ( ( length and ) severity ) ) ( in heat ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (NP (DT This)) (, ,) (ADVP (IN along) (PP (IN with) (NP (PRP$ its) (JJ lengthened) (NN duration)))) (, ,) (VP (VBZ is) (RB not) (VP (VBN found) (PP (IN in) (NP (NP (NN anything) (RB else)) (PP (IN besides) (NP (DT the) (JJ fast)))) (, ,) (ADVP (RB especially))) (PP (IN in) (NP (NP (DT the) (NNS days)) (PP (IN of) (NP (NN summer))))) (PP (JJ due) (TO to) (NP (NP (PRP$ their) (NN length) (CC and) (NN severity)) (PP (IN in) (NP (NN heat))))))) (. .)))
This, along with its lengthened duration, is not found in anything else besides the fast, especially in the days of summer due to their length and severity in heat.
(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)))))) (. .)))