( ( For example ) ( , ( turtles ( ( ( ( have ( ( only ( eight pairs ) ) ( of ( ( ribs , ) ( which ( are ( developed ( into ( ( ( a ( bony ( or ( cartilagenous carapace ) ) ) ) and ) plastron ) ) ) ) ) ) ) ) ) , ) ( while ( snakes ( have ( ( numerous ribs ) ( running ( along ( ( the ( full length ) ) ( of ( their trunk ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN For) (NP (NN example))) (, ,) (NP (NNS turtles)) (VP (VBP have) (NP (NP (RB only) (CD eight) (NNS pairs)) (PP (IN of) (NP (NP (NNS ribs)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (VP (VBN developed) (PP (IN into) (NP (NP (DT a) (NN bony) (CC or) (NNS cartilagenous) (NN carapace)) (CC and) (NP (NN plastron))))))))))) (, ,) (SBAR (IN while) (S (NP (NNS snakes)) (VP (VBP have) (NP (NP (JJ numerous) (NNS ribs)) (VP (VBG running) (PP (IN along) (NP (NP (DT the) (JJ full) (NN length)) (PP (IN of) (NP (PRP$ their) (NN trunk))))))))))) (. .)))
For example, turtles have only eight pairs of ribs, which are developed into a bony or cartilagenous carapace and plastron, while snakes have numerous ribs running along the full length of their trunk.
(ROOT (S (NP (JJS Most) (NN turtle) (NNS bodies)) (VP (VBP are) (VP (VBN covered) (PP (IN by) (NP (NP (DT a) (JJ special) (NN bony) (CC or) (NNS cartilaginous) (NN shell)) (VP (VBN developed) (PP (IN from) (NP (PRP$ their) (NNS ribs)))))))) (. .)))