( ( a -RRB- ) ( ( ( ( ( ( The ( Earth 's ) ) ( inner core ) ) ( is solid ) ) and ) ( ( the ( outer core ) ) ( is molten ) ) ) . ) )
(ROOT (S (LST (LS a) (-RRB- -RRB-)) (S (NP (NP (DT The) (NN Earth) (POS 's)) (JJ inner) (NN core)) (VP (VBZ is) (ADJP (JJ solid)))) (CC and) (S (NP (DT the) (JJ outer) (NN core)) (VP (VBZ is) (ADJP (JJ molten)))) (. .)))
a) The Earth's inner core is solid and the outer core is molten.
(ROOT (S (NP (NP (DT The) (JJ outer) (NN core)) (PP (IN of) (NP (DT the) (NN earth)))) (VP (VBZ is) (ADJP (JJ molten))) (. .)))