( ( Alone ( among ( the planets ) ) ) ( , ( ( ( the ( surface temperatures ) ) ( of Earth ) ) ( ( ( allow water ) ( to ( exist ( in ( ( ( ( ( ( ( ( all ( three states ) ) , ) ( solid ( -LRB- ( ice -RRB- ) ) ) ) , ) ( liquid ( -LRB- ( water -RRB- ) ) ) ) , ) and ) ( gas ( -LRB- ( ( water vapor ) -RRB- ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (ADVP (RB Alone)) (IN among) (NP (DT the) (NNS planets))) (, ,) (NP (NP (DT the) (NN surface) (NNS temperatures)) (PP (IN of) (NP (NNP Earth)))) (VP (VBP allow) (NP (NN water)) (S (VP (TO to) (VP (VB exist) (PP (IN in) (NP (NP (DT all) (CD three) (NNS states)) (, ,) (NP (JJ solid) (-LRB- -LRB-) (NN ice) (-RRB- -RRB-)) (, ,) (NP (JJ liquid) (-LRB- -LRB-) (NN water) (-RRB- -RRB-)) (, ,) (CC and) (NP (NP (NN gas)) (PRN (-LRB- -LRB-) (NP (NN water) (NN vapor)) (-RRB- -RRB-))))))))) (. .)))
Alone among the planets, the surface temperatures of Earth allow water to exist in all three states, solid (ice), liquid (water), and gas (water vapor).
(ROOT (S (NP (NNP Water)) (VP (VBZ exists) (PP (IN on) (NP (NP (NN earth)) (PP (IN in) (NP (NP (CD three) (NN matter) (NNS states)) (VP (VBZ states))))))) (. .)))