( ( Summer heat ) ( ( increases ( ( the ( sugar content ) ) ( in fruit ) ) ) . ) )
(ROOT (S (NP (NNP Summer) (NN heat)) (VP (VBZ increases) (NP (NP (DT the) (NN sugar) (NN content)) (PP (IN in) (NP (NN fruit))))) (. .)))
Summer heat increases the sugar content in fruit.
(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)))))) (. .)))