( ( ( ( ( ( ( Hydrosphere Water ) ( as ice ) ) , ) ( ( ( ( ( ( liquid water ) , ) or ) ( water vapor ) ) , ) at ) ) or ) ( close ( to ( ( the surface ) ( of ( the Earth ) ) ) ) ) ) . )
(ROOT (S (VP (VP (VB Hydrosphere) (NP (NNP Water)) (PP (IN as) (NP (NN ice))) (, ,) (ADVP (NP (NP (JJ liquid) (NN water)) (, ,) (CC or) (NP (NN water) (NN vapor)) (, ,)) (IN at))) (CC or) (VP (VB close) (PP (TO to) (NP (NP (DT the) (NN surface)) (PP (IN of) (NP (DT the) (NN Earth))))))) (. .)))
Hydrosphere Water as ice, liquid water, or water vapor, at or close to the surface of the Earth.
(ROOT (S (NP (NP (DT The) (NN surface)) (PP (IN of) (NP (NN earth)))) (VP (VBZ is) (VP (VBN covered) (PP (IN by) (NP (NP (DT a) (ADJP (RB relatively) (JJ thin)) (NN layer)) (PP (IN of) (NP (NP (NN water)) (VP (VBN called) (NP (DT the) (NN hydrosphere))))))))) (. .)))