( ( The ( endocrine system ) ) ( ( includes ( ( several glands ) ( that ( produce hormones ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ endocrine) (NN system)) (VP (VBZ includes) (NP (NP (JJ several) (NNS glands)) (SBAR (WHNP (WDT that)) (S (VP (VBP produce) (NP (NNS hormones))))))) (. .)))
The endocrine system includes several glands that produce hormones.
(ROOT (S (NP (JJS Most) (NNS hormones)) (VP (VBP are) (VP (VBN produced) (PP (IN by) (NP (DT the) (JJ endocrine) (NN system))))) (. .)))
Most hormones are produced by the endocrine system.