( ( In cartilage ) ( , ( ( ( the sulfur ) containing ) ( ( proteoglycans ( ( ( glucosamine ( and ( chondroitin form ) ) ) ( with collagen ) ) ( ( ( a ( fibrous ( protein substance ) ) ) ( that ( ( give cartilage ) ( its ( ( structure and ) flexibility ) ) ) ) ) ( -LRB- ( ( ( 5 , ) 6 ) -RRB- ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NN cartilage))) (, ,) (NP (NP (DT the) (NN sulfur)) (VP (VBG containing))) (VP (VBZ proteoglycans) (S (NP (NP (NN glucosamine) (CC and) (NN chondroitin) (NN form)) (PP (IN with) (NP (NN collagen)))) (VP (NP (NP (DT a) (JJ fibrous) (NN protein) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (VBP give) (NP (NN cartilage)) (NP (PRP$ its) (NN structure) (CC and) (NN flexibility)))))) (PRN (-LRB- -LRB-) (NP (NP (CD 5)) (, ,) (NP (CD 6))) (-RRB- -RRB-))))) (. .)))
In cartilage, the sulfur containing proteoglycans glucosamine and chondroitin form with collagen a fibrous protein substance that give cartilage its structure and flexibility (5, 6).
(ROOT (S (NP (JJ Lamprey) (NN cartilage)) (VP (VBZ contains) (NP (DT no) (NN collagen))) (. .)))