( ( Impacting comets ) ( ( ( ( ( delivered ( most ( of ( ( Earth 's ) oceans ) ) ) ) , ) and ) ( ( ( deposited water ) ( on ( the Moon ) ) ) ( where ( it ( now ( resides ( as ( ice ( in ( the ( polar soil ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (VBG Impacting) (NNS comets)) (VP (VP (VBD delivered) (NP (NP (JJS most)) (PP (IN of) (NP (NP (NNP Earth) (POS 's)) (NNS oceans))))) (, ,) (CC and) (VP (VBD deposited) (NP (NN water)) (PP (IN on) (NP (DT the) (NNP Moon))) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (ADVP (RB now)) (VP (VBZ resides) (PP (IN as) (NP (NP (NN ice)) (PP (IN in) (NP (DT the) (JJ polar) (NN soil)))))))))) (. .)))
Impacting comets delivered most of Earth's oceans, and deposited water on the Moon where it now resides as ice in the polar soil.
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (NP (NN earth) (POS 's)) (NN water)))) (VP (VBZ is) (VP (VBN located) (PP (IN in) (NP (NNS oceans)))))))