( ( This system ) ( contains ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( lungs , ) kidneys ) , ) ureters ) , ) ( a bladder ) ) , ) ( a liver ) ) , ) intestines ) , ) ( sphincter muscles ) ) , ) skin ) , ) and ) ( sweat glands ) ) ) )
(ROOT (S (NP (DT This) (NN system)) (VP (VBZ contains) (NP (NP (NNS lungs)) (, ,) (NP (NNS kidneys)) (, ,) (NP (NNS ureters)) (, ,) (NP (DT a) (NN bladder)) (, ,) (NP (DT a) (NN liver)) (, ,) (NP (NNS intestines)) (, ,) (NP (NN sphincter) (NNS muscles)) (, ,) (NP (NN skin)) (, ,) (CC and) (NP (NN sweat) (NNS glands))))))
This system contains lungs, kidneys, ureters, a bladder, a liver, intestines, sphincter muscles, skin, and sweat glands
(ROOT (S (NP (NP (NNS Kidneys)) (, ,) (NP (JJ large) (NN intestine)) (, ,) (NP (NN liver)) (, ,) (NP (NN skin)) (, ,) (CC and) (NP (NNS lungs))) (VP (VBP comprise) (NP (DT the) (JJ excretory) (NN system))) (. .)))