( ( Human ( body systems ) ) . )
(ROOT (NP (NP (NNP Human)) (NP (NN body) (NNS systems)) (. .)))
Human body systems.
(ROOT (S (NP (DT The) (JJ cardiovascular) (NN system)) (VP (VBZ moves) (NP (NP (NNS nutrients)) (CC and) (NP (JJ other) (NNS substances))) (PP (IN throughout) (NP (DT the) (NN body)))) (. .)))