( ( In ( ( ( ( several ( ethnic groups ) ) , ) ( most significantly ) ) ( the Japanese ) ) ) ( , ( ( the ( tenth rib ) ) ( ( ( ( ( is sometimes ) ( a ( floating rib ) ) ) , ) ( as ( it ( ( lacks ( a ( cartilaginous connection ) ) ) ( to ( the ( seventh rib ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (JJ several) (JJ ethnic) (NNS groups)) (, ,) (ADVP (RBS most) (RB significantly)) (NP (DT the) (JJ Japanese)))) (, ,) (NP (DT the) (JJ tenth) (NN rib)) (VP (VBZ is) (ADVP (RB sometimes)) (NP (DT a) (VBG floating) (NN rib)) (, ,) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ lacks) (NP (DT a) (JJ cartilaginous) (NN connection)) (PP (TO to) (NP (DT the) (JJ seventh) (NN rib))))))) (. .)))
In several ethnic groups, most significantly the Japanese, the tenth rib is sometimes a floating rib, as it lacks a cartilaginous connection to the seventh rib.
(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)))))))) (. .)))