( Urine ( ( is ( ( the ( liquid waste ) ) ( that ( is ( ( made ( by ( the kidneys ) ) ) ( when ( they ( clean ( the blood ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Urine)) (VP (VBZ is) (NP (NP (DT the) (JJ liquid) (NN waste)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN made) (PP (IN by) (NP (DT the) (NNS kidneys))) (SBAR (WHADVP (WRB when)) (S (NP (PRP they)) (VP (VB clean) (NP (DT the) (NN blood))))))))))) (. .)))
Urine is the liquid waste that is made by the kidneys when they clean the blood.
(ROOT (S (NP (NNP Urine)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (JJ liquid) (NN waste)) (VP (VBN formed) (PP (IN by) (NP (NNS kidneys)))))))) (. .)))