( ( ( The ( major function ) ) ( of ( the kidneys ) ) ) ( ( is ( to ( ( ( ( ( remove wastes ) , ) ( primarily ( in ( ( the form ) ( of urine ) ) ) ) ) , ) ( from ( the blood ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ major) (NN function)) (PP (IN of) (NP (DT the) (NNS kidneys)))) (VP (VBZ is) (S (VP (TO to) (VP (VB remove) (NP (NNS wastes)) (, ,) (PP (ADVP (RB primarily)) (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NN urine))))) (, ,) (PP (IN from) (NP (DT the) (NN blood))))))) (. .)))
The major function of the kidneys is to remove wastes, primarily in the form of urine, from 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)))))))) (. .)))