( ( The core ) ( ( ( ( is ( ( the ( innermost layer ) ) ( of ( the Earth ) ) ) ) and ) ( is ( made ( of ( ( very ( hot ( , heavy ) ) ) metals ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN core)) (VP (VP (VBZ is) (NP (NP (DT the) (JJ innermost) (NN layer)) (PP (IN of) (NP (DT the) (NN Earth))))) (CC and) (VP (VBZ is) (VP (VBN made) (PP (IN of) (NP (ADJP (RB very) (JJ hot) (, ,) (JJ heavy)) (NNS metals)))))) (. .)))
The core is the innermost layer of the Earth and is made of very hot, heavy metals.
(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))))) (. .)))