( ( ( The skeleton ) ( of ( the lamprey ) ) ) ( ( is ( composed ( of ( cartilage ( -LRB- ( gristle -RRB- ) ) ) ) ) ) ; ) )
(ROOT (S (NP (NP (DT The) (NN skeleton)) (PP (IN of) (NP (DT the) (NN lamprey)))) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NP (NN cartilage)) (PRN (-LRB- -LRB-) (NP (NN gristle)) (-RRB- -RRB-)))))) (: ;)))
The skeleton of the lamprey is composed of cartilage (gristle);
(ROOT (S (NP (JJ Lamprey) (NN cartilage)) (VP (VBZ contains) (NP (DT no) (NN collagen))) (. .)))