( Lipids ( ( perform ( many ( important roles ) ) ) . ) )
(ROOT (S (NP (NNS Lipids)) (VP (VBP perform) (NP (JJ many) (JJ important) (NNS roles))) (. .)))
Lipids perform many important roles.
(ROOT (S (NP (NNS Lipids)) (VP (VBP play) (NP (NP (JJ several) (JJ important) (NNS roles)) (PP (IN in) (NP (DT the) (JJ human) (NN body))))) (. .)))