( ( That ( innermost core ) ) ( ( is ( composed ( of ( ( the ( few ( heavy elements ) ) ) ( available ( ( that far ) ( from ( the sun ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT That) (NN innermost) (NN core)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NP (DT the) (JJ few) (JJ heavy) (NNS elements)) (ADJP (JJ available) (PP (ADVP (RB that) (RB far)) (IN from) (NP (DT the) (NN sun)))))))) (. .)))
That innermost core is composed of the few heavy elements available that far from the sun.
(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))))) (. .)))