( ( The ( brain stem ) ) ( ( controls ( ( ( many ( of ( ( the ( body 's ) ) ( basic functions ) ) ) ) , ) ( such ( as ( ( ( ( ( ( ( ( ( ( ( ( blood pressure ) , ) ( heart rate ) ) , ) breathing ) , ) chewing ) , ) swallowing ) , ) and ) ( eye movement ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN brain) (NN stem)) (VP (VBZ controls) (NP (NP (JJ many)) (PP (IN of) (NP (NP (DT the) (NN body) (POS 's)) (JJ basic) (NNS functions))) (, ,) (PP (JJ such) (IN as) (NP (NP (NN blood) (NN pressure)) (, ,) (NP (NN heart) (NN rate)) (, ,) (NP (NN breathing)) (, ,) (NP (JJ chewing)) (, ,) (NP (NNP swallowing)) (, ,) (CC and) (NP (NN eye) (NN movement)))))) (. .)))
The brain stem controls many of the body's basic functions, such as blood pressure, heart rate, breathing, chewing, swallowing, and eye movement.
(ROOT (S (NP (DT The) (NN brain) (NN stem)) (VP (VBZ regulates) (NP (NP (DT the) (NN rate)) (PP (IN of) (NP (NN breathing))))) (. .)))