( ( -LSB- ( ( 2 -RSB- ) ( ( ( The ( earth 's ) ) surface ) ( has ( ( ( three ( primary components ) ) : ) ( ( ( ( the hydrosphere ) -LRB- ) ( fresh ( and ( salty ( surface waters ) ) ) ) ) -RRB- ) ) ) ) ) ) ; )
(ROOT (S (VP (VBG -LSB-) (NP (NP (CD 2) (NNS -RSB-)) (SBAR (S (NP (NP (DT The) (NN earth) (POS 's)) (NN surface)) (VP (VBZ has) (NP (NP (CD three) (JJ primary) (NNS components)) (: :) (NP (NP (DT the) (NN hydrosphere)) (-LRB- -LRB-) (NP (JJ fresh) (CC and) (JJ salty) (NN surface) (NNS waters)) (-RRB- -RRB-)))))))) (: ;)))
[2] The earth's surface has three primary components: the hydrosphere (fresh and salty surface waters);
(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))))))))) (. .)))