( ( ( core ( The ( innermost layer ) ) ) ( of ( the Earth ) ) ) ( , ( ( ( made ( up ( of mostly ) ) ) ( of ( ( iron and ) nickel ) ) ) . ) ) )
(ROOT (S (NP (NP (JJ core) (DT The) (JJ innermost) (NN layer)) (PP (IN of) (NP (DT the) (NN Earth)))) (, ,) (VP (VBD made) (ADVP (RB up) (PP (IN of) (ADVP (RB mostly)))) (PP (IN of) (NP (NN iron) (CC and) (NN nickel)))) (. .)))
core The innermost layer of the Earth, made up of mostly of iron and nickel.
(ROOT (S (NP (NP (DT The) (JJ innermost) (NN layer)) (PP (IN of) (NP (DT the) (NN sun)))) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (DT the) (NN core))))) (. .)))