( Earth ( ( is ( ( ( the ( only planet ) ) ( in ( the ( Solar System ) ) ) ) ( where ( ( ( ( the ( present ( surface temperature ) ) ) and ) pressure ) ( allow ( ( ( ( the ( three forms ) ) ( of ( ( ( ( ( ( ( water , ) ( solid ( -LRB- ( ice -RRB- ) ) ) ) , ) ( liquid ( -LRB- ( ocean -RRB- ) ) ) ) , ) and ) gas ) ) ) ( -LRB- ( ( ( water ( vapor condensing ) ) ( in clouds ) ) -RRB- ) ) ) ( to ( exist simultaneously ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Earth)) (VP (VBZ is) (NP (NP (DT the) (JJ only) (NN planet)) (PP (IN in) (NP (DT the) (NNP Solar) (NNP System))) (SBAR (WHADVP (WRB where)) (S (NP (NP (DT the) (JJ present) (NN surface) (NN temperature)) (CC and) (NP (NN pressure))) (VP (VBP allow) (S (NP (NP (NP (DT the) (CD three) (NNS forms)) (PP (IN of) (NP (NP (NN water)) (, ,) (NP (JJ solid) (-LRB- -LRB-) (NN ice) (-RRB- -RRB-)) (, ,) (NP (JJ liquid) (-LRB- -LRB-) (NN ocean) (-RRB- -RRB-)) (, ,) (CC and) (NP (NN gas))))) (PRN (-LRB- -LRB-) (NP (NP (NN water) (NN vapor) (NN condensing)) (PP (IN in) (NP (NNS clouds)))) (-RRB- -RRB-))) (VP (TO to) (VP (VB exist) (ADVP (RB simultaneously)))))))))) (. .)))
Earth is the only planet in the Solar System where the present surface temperature and pressure allow the three forms of water, solid (ice) , liquid (ocean) , and gas ( water vapor condensing in clouds ) to exist simultaneously .
(ROOT (S (NP (NNP Earth)) (VP (VBZ is) (NP (NP (DT the) (JJ only) (NN planet)) (PP (IN in) (NP (NP (DT the) (JJ solar) (NN system)) (SBAR (WHNP (WDT that)) (S (VP (VBZ has) (NP (NP (NN water)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (ADJP (JJ essential)) (PP (IN for) (NP (JJ human) (NN life))) (, ,) (ADJP (JJ present)) (PP (IN in) (NP (NP (QP (DT all) (CD three))) (PP (IN of) (NP (PRP$ its) (NNS states)))))))))))))))) (. .)))