( ( ( The skeleton ) ( of ( a shark ) ) ) ( ( ( is entirely ) ( ( composed up ) ( of cartilage ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN skeleton)) (PP (IN of) (NP (DT a) (NN shark)))) (VP (VBZ is) (ADVP (RB entirely)) (VP (VBN composed) (PRT (RP up)) (PP (IN of) (NP (NN cartilage))))) (. .)))
The skeleton of a shark is entirely composed up of cartilage.
(ROOT (S (ADVP (RB Early) (PP (IN in) (NP (NP (DT the) (NN development)) (PP (IN of) (NP (DT a) (JJ human) (NN fetus)))))) (, ,) (NP (DT the) (NN skeleton)) (VP (VBZ is) (VP (VBN made) (ADVP (RB entirely)) (PP (IN of) (NP (NN cartilage))))) (. .)))