Guangzhou, with a population of more than 5 million, straddles the Pearl River China's fifth longest which links the city to the South China Sea.
( ( ( ( Guangzhou , ) ( with ( ( a population ) ( of ( more ( ( than 5 ) million ) ) ) ) ) ) , ) ( ( straddles ( ( ( the ( Pearl ( River ( China 's ) ) ) ) ( fifth longest ) ) ( which ( ( links ( the city ) ) ( to ( the ( South ( China Sea ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Guangzhou)) (, ,) (PP (IN with) (NP (NP (DT a) (NN population)) (PP (IN of) (NP (QP (JJR more) (IN than) (CD 5) (CD million)))))) (, ,)) (VP (VBZ straddles) (NP (NP (NP (DT the) (NNP Pearl) (NNP River) (NNP China) (POS 's)) (JJ fifth) (NN longest)) (SBAR (WHNP (WDT which)) (S (VP (VBZ links) (NP (DT the) (NN city)) (PP (TO to) (NP (DT the) (NNP South) (NNP China) (NNP Sea)))))))) (. .)))
The population of Guangzhou has been growing out of control for the past century.
( ( ( The population ) ( of Guangzhou ) ) ( ( has ( been ( ( ( growing out ) ( of control ) ) ( for ( the ( past century ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN population)) (PP (IN of) (NP (NNP Guangzhou)))) (VP (VBZ has) (VP (VBN been) (VP (VBG growing) (PRT (RP out)) (PP (IN of) (NP (NN control))) (PP (IN for) (NP (DT the) (JJ past) (NN century)))))) (. .)))