( ( Below ( that ( is ( the ( ( much denser ) ( metallic core ) ) ) ) ) ) ( , ( ( with ( ( ( a ( liquid ( outer portion ) ) ) and ) ( a ( solid ( inner part ) ) ) ) ) ( , ( both ( ( ( made ( of iron ) ) ( with ( some nickel ) ) ) . ) ) ) ) ) )
(ROOT (S (NP (NP (NNP Below)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (NP (DT the) (ADJP (RB much) (JJ denser)) (JJ metallic) (NN core)))))) (, ,) (PP (IN with) (NP (NP (DT a) (JJ liquid) (JJ outer) (NN portion)) (CC and) (NP (DT a) (JJ solid) (JJ inner) (NN part)))) (, ,) (NP (DT both)) (VP (VBD made) (PP (IN of) (NP (NN iron))) (PP (IN with) (NP (DT some) (NN nickel)))) (. .)))
Below that is the much denser metallic core, with a liquid outer portion and a solid inner part, both made of iron with some nickel.
(ROOT (S (NP (DT Some) (NNS meteorites)) (VP (VP (VBP are) (VP (VBN made) (PP (IN of) (NP (NN iron) (CC and) (NN nickel))))) (CC and) (VP (VBP are) (VP (VBN thought) (S (VP (TO to) (VP (VB be) (ADJP (RB very) (JJ similar) (PP (TO to) (NP (NP (DT the) (NN core)) (PP (IN of) (NP (DT the) (NN earth)))))))))))) (. .)))