( ( ( Metabolic ( excretory ( product ( Excretory ( organ ( Excreted ( as Carbon ) ) ) ) ) ) ) ( dioxide ( Urea ( Excess ( water ( Bile ( pigments ( Lungs Gas ) ) ) ) ) ) ) ) ( in ( ( expired ( air ( Kidneys Constituent ) ) ) ( in ( ( urine ( Kidneys Constituent ) ) ( in ( ( urine ( Liver Constituent ) ) ( in faeces ) ) ) ) ) ) ) )
(ROOT (SINV (VP (VBZ Metabolic)) (NP (JJ excretory) (NN product) (NNP Excretory) (NN organ) (NNP Excreted) (IN as) (NNP Carbon)) (NP (NN dioxide) (NN Urea) (NNP Excess) (NN water) (NNP Bile) (NN pigments) (NNP Lungs) (NNP Gas)) (PP (IN in) (NP (NP (NNP expired) (NN air) (NNP Kidneys) (NNP Constituent)) (PP (IN in) (NP (NP (NNP urine) (NNPS Kidneys) (NNP Constituent)) (PP (IN in) (NP (NP (NNP urine) (NNP Liver) (NNP Constituent)) (PP (IN in) (NP (NNS faeces)))))))))))
Metabolic excretory product Excretory organ Excreted as Carbon dioxide Urea Excess water Bile pigments Lungs Gas in expired air Kidneys Constituent in urine Kidneys Constituent in urine Liver Constituent in faeces
(ROOT (S (NP (NNP Urea)) (VP (VBZ is) (VP (VP (VBN made) (PP (IN in) (NP (DT the) (NN liver)))) (CC and) (VP (VBN excreted) (PP (IN in) (NP (NN urine)))))) (. .)))
Urea is made in the liver and excreted in urine.